Hahaha, Togo, I'll bear that in mind for next year. On a similar note me and a few friends attend a monthly quiz run by a church group (upstanding Anglican types) and people bring various offerings to put on the buffet. We did once entertain the notion of taking some cannabis cakes.
a few years back, I heard someone would boil brussel sprouts, dip them in chocolate and eventually wrap them up a la Ferrero to hand out to the guisers.
(well, to those she didn't like anyway !)