A molcajete is a stone mortar and pestle from Mexico. They're great for grinding spices and making salsa and guacamole because they give everything a nice coarse and rustic feel. I've never collected anything, but I think I might start collecting these because each one is decorated differently.
I'd say I'm quite powerful so I'm not afraid of jumps or acrobatic elements. The hardest part is... get on the beam and stay there on top of it!