There - that got your attention... I baked a chocolate cake for Ben last night (this is obviously not mine). He's learning about money in his class right now, and all the kids had to bring something along to their market day, they're using fake money.
I loved Ben's attention to detail. He suggested packing food-handling gloves, drew a big poster, which set out the ingredients. He also did a small cardboard sign, saying that slices were $1.50 each. The sign could be flipped to the other side ($1 each) if sales weren't going so well!!