The card cleaner is interesting, I think 90+% of the time people would choose one specific rank and one specific suit for every card that was changed. Might be simpler to implement that way, too. Sounds very powerful at 3 - 4 chips, even if it was rare. I could see if it was more expensive and the specific rank and suit was random, that could work. I will consider all of this.
The die idea is very similar to an idea I had, and I really like it! I think it could be the first bauble that you can upgrade, going from d6 to d8 to d10 to d12 to d20, increasing the maximum bonuses along the way. Definitely a great idea!
Thanks for the ideas captain schizziobeat!