So Jackie (my mad scientist friend) dropped off a little package for us back in December (well, it wasn't exactly little and it wasn't just one). She gave 12 experiments to do over Christmas vacation. Each day came with a little card that said,
"On the (insert number) day of Christmas Vaca science chick gave to me..."
We made snow, catapults, electro-magnets, crystals, fountains, orbs, sea monkeys...I can't even remember everything off the top of my head. It was such a cute gift.
The marshmallow catapult may be the favorite of the bunch.