Here are 2 super-quick craft projects you can do with your little ones.
First, a nice summery fish tank. I got the idea from my brother who made a fish tank with his little boy and even provided imaginary "fish food" (using an empty spice container). All this is is tissue paper inside a clear plastic container, and your child can create fish of different colors to put inside. Simple, but somehow incredibly delightful for little ones (especially toddlers).
This next project takes a bit more time, but is great for kids who love to paint. Cut up milk cartons to make bridges and highways, and arrange them on a painted roadway (or river, or both). Use toilet tissue rolls as columns to support the bridges. We used a cut up paper grocery bag to paint on. Connect several together and you could make something quite elaborate!
I love encouraging children to provide handmade props for their toys!