Several currencies have already been added. Randomly, you may bid with Rena, Jewel of Creation, Jewel of Chaos, BOK+3, BOK+4. Each currency has its own minimum bid.
Continue to comment in the post next to this one, approved suggestions will be implemented as soon as possible.
P.S. MrSmith is no longer a GM.
Edit: if you're not happy with the new currencies you can suggest others. Also I updated the rules at the griefing part.
Edit 2: at a later moment we will add more currencies like Heart of Love / medals and others.