Crafts are always huge hits with kids that age, make monster masks out of paper plates, sock puppets, milk jug animals, etc. Have them color a picture for their parents. Watch old disney movies. Outside games such as red light green light, mother may i (avoid hide n seek for obvious reasons). Bake or prepare snacks with them, kids love being hands on, try ants on a log (celery, peanut butter, and raisons) and let them make them. Dinosaur (or other small toy) hunt, like an easter egg hunt but with small toys.
well ... crafts are a big thing and so is being outside but if u ever wanna make money or get some craft ideas or sell anything there is this webiste my mom uses its called Etsy.com and they have a lot of things ... like a lot
make play do! or have them draw with chalk. make some cookies and have them decorate them with sprinkles