"Tsumiki" chalk building blocks by a Japanese company. This is such a cool idea for kids to design there toy with chalk and then redo it over and over again. I bet you could chalkboard paint wooden blocks and DIY.
Using forks for printing. Would make such a cute project for Kdg. I could see them making some very funny porcupines! Fork stamp would be good for hay stacks or a dog. Can use fork for upper grades and manipulate so just 2 prongs were printed and etc.