This is a brand new cling rubber stamp from Stampendous. You use them like the clear acrylic stamps, by peeling them off the carrier sheet, putting them on an acrylic block, and stamping. But the stamping surface is actually made out of normal rubber that you find on the wood mounted stamps.

This is the House Mouse Juggling Dice cling stamps. Very cute perfect for cards and bunco invitations. 

This stamp image measures  2-3/4  x  2