Put rice in 5 different solo cups then you can make the that way as well also our kids had fun with putting them back in 10 min every day my two older ones separated the rice and they glued it to page (Bottle Bag Sensory Play)
DIY Sand and Rock Box by FSPDT. Gdjk -> made this with toilet rolls (aka tunnels) and moon sand instead of play sand. My son loved playing with it. The moon sand cleans up nicely indoors but play sand will be easier to play with when using the small cars.
This door way bean bag game uses the whole arm to throw the bean bag. It also requires focusing on one spot and aiming. I would use this in a class room because it is a simple and inexpensive game to get the kids active with gross motor skills and active.
Busy Bags for littles - WOW! Check out this organization! This would be great for math manipulatives in bags, CDs / DVDs for check-out in school or classroom library, storage of small parts in classroom and so much more! Like homeschooling organization.