if you were going to be stranded on a tropical island but you can bring a backpack full of stuff, other than the obvious survival essentials, what nonessential stuff would you bring? entertainment, comfort items, etc
Paints, glue, and miniatures. Easy! If I were being difficult - which I usually like to be - I'd probably make sure to include a few rule systems for games that nobody else in the group (I assume we're in a Gilligan's Island-style group scenario) plays, so that I've got time to teach them some damn thing other than Warhammer.