Like this idea - Scan childrens art work and then print out in smaller size. Now make art gallery in hallways of your childrens art:). Awesome idea, even for my grown young adults to have all of the kept keepsakes of their artwork in one frame.
DIY Paintbrush Ideas for Kids using Household Items- I would use this in my science center. First I would have children predict what each of these "paintbrushes" would do, then students would use each of them and see if their predictions were right.