Here's what you need:
It's well past hot cocoa season so hopefully you still have a stale, open bag of mini marshmallows languishing in the deep recesses of the cupboard (or full-size) and if not, it's a very cheap addition to the craft closet. Set out some marshmallows in a container, some toothpicks and go to town. Your only limit is your imagination and gravity. Monkey even got the markers out and colored some of the toothpicks to make a campfire. He made a robot with missiles (of course), some buildings and a campfire. It helped us both survive our sick day (we were both sick). What will you make?