Marble Races with a cheap pool noodle (occupies the kids for hours.) Did this, but instead of cutting the pool noodle, the marble is small enough to fit inside the full noodle to roll down. Then can use the noodle for other things too!
Watermark Tee - Find a quote you love, write it on a white t-shirt with Elmers Glue. Let it dry, and then soak the shirt in a vat of dye (your choice!) and thennnn, voila! Note to self- Quote from Art of War?