Currently banned for 30 days for something I didn't do, however had no video evidence to prove otherwise.
Honestly, the only thing you can do is record most of the time in case stuff like this happens to you.
I just want to play the game again, that's all, I think that's enough compensation, to be unbanned before your ban was meant to end.
Giving away cubelets or other items/exp is kind of a bad idea in my opinion, and other users have mentioned above, it is easily abusable.
No one should get special treatment, the compensation is an early unban, sometimes it can even be a good thing to be banned, you will find other things to do and you can take a small break off the server, most players come back if they truly enjoy the server, which is the type of players that make this community great.
Tl;dr:
bad idea, abusable, you get an early unban, that's compensation enough.