if someone lends you some tupperware, usually so you can take some of their food home, you should return the tupperware cleaned and containing something new, preferably baked goods.

anyway, this is what jennifer told us her mother does–and though none of us could confirm it as a “thing” it seems like a perfectly nice habit to pick up. plus it gave me an excuse to make cookies–after i cleaned out some tupperware that had been holding bbq rescued from a not-so-recent, over-catered work function.