Yes, storage makes me happy. And, Really Good Stuff makes me happy. If you aren't familiar with Really Good Stuff, you have to check them out. I absolutely love their book boxes and their storage bins. They are sturdy and perfect for the classroom. I use the Group Materials Stackable Trays for my math and literacy stations, they are perfect!
They are also currently on sale at Really Good Stuff. Check out their Weekend We-Treat on boxes, bins, and tubs. YAY!