Watch something ordinary turn into a bunch of adorable little minions. Cardboard Tube Minion Crafts transform toilet tubes into the cutest toilet paper roll crafts ever witnessed. Despicable Me minions are kid favorites.
Bottle Top Snakes - even without all the other stuff as a cheap threading activity for fine motor skills this would be a great idea. I personally use pipe cleaners to thread things onto like beads, but lids would work just as well