Here's a sprinkler I made into a spawner, for those of you who wanna derp around as if summer isn't ending.
/summon FallingSand ~ ~1 ~ {id:"FallingSand",Data:0b,Time:1b,TileID:52,TileEntityData:{MinSpawnDelay:1s,MaxSpawnDelay:1s,SpawnCount:1s,id:"MobSpawner",RequiredPlayerRange:10s,Delay:0s,MaxNearbyEntities:30s,SpawnRange:4s,z:-99960,SpawnData:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d]},SpawnPotentials:[{Weight:1,Type:"ThrownPotion",Properties:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d]}}],y:63,EntityId:"ThrownPotion",x:-100052}}
and here's an evil sprinkler that will murder you and your friends. Great for deterring griefers!:
/summon FallingSand ~ ~1 ~ {id:"FallingSand",Data:0b,Time:1b,TileID:52,TileEntityData:{MinSpawnDelay:1s,MaxSpawnDelay:1s,SpawnCount:1s,id:"MobSpawner",RequiredPlayerRange:10s,Delay:1s,MaxNearbyEntities:30s,SpawnRange:4s,z:-99959,SpawnData:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},SpawnPotentials:[{Weight:1,Type:"ThrownPotion",Properties:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Riding:{id:"ThrownPotion",Motion:[0.0d,0.6d,0.0d],Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}},Potion:{id:373s,Damage:16456s,Count:1b,tag:{CustomPotionEffects:[{Amplifier:0b,Ambient:1b,Duration:200,Id:20b},{Amplifier:0b,Ambient:1b,Duration:200,Id:19b},{Amplifier:0b,Ambient:1b,Duration:0,Id:7b},{Amplifier:0b,Ambient:1b,Duration:200,Id:15b},{Amplifier:9b,Ambient:1b,Duration:200,Id:18b},{Amplifier:0b,Ambient:1b,Duration:200,Id:2b},{Amplifier:0b,Ambient:1b,Duration:200,Id:17b},{Amplifier:0b,Ambient:1b,Duration:200,Id:9b}]}}}}],y:63,EntityId:"ThrownPotion",x:-100066}}