Use it to teach your preschooler colors. Make empty folders and color them each a primary color. In the title of the folder enter the color's name. If you are learning another language use those names as the titles. Use the colors to reflect progress on a project.
First drafts are red.
Second drafts are blue. You change the color to green having approved the project for printing, posting, or presenting. You can then visually assess where everyone stands in the project. One of the deep mysteries to me is our logo, the symbol of lust and knowledge, bitten into, all crossed with in the colors of the rainbow in the wrong order. All trademarks, copyright and logos belong to their respective owners.