Following on from the life on the moon thread, if a little over one pound of e.g. toffee (because that's easy to make, something easier would be better, but I'm not a sweetmaker so I don't know what's easier than toffee) was made in space, and divided into pieces of approximately one half, one quarter, one eighth, one sixteenth down to perhap a one tenth of a gram size, then each piece auctioned off with a reserve price of three times the cost of production including the costs of taking the ingredients to orbit and bringing the product back down, I think that with a nice little certificate of authenticity those would sell.