Oh... this must have been a while ago.
Well during one particular holiday season, I wanna say from the 25th-1st there was a power called "decorate" that when used would:
1) Place a santa hat on the piece for the duration of the game (would purify affect this?)
2) Decorate the entire interface with Christmas ornaments
The power did not actually impact the game (other then wasting a few orb spawns). It was still extremely rare, like 4 times more rare than smart bombs.
I want more goofy powers like this!