Use vinyl transfers to make semi-permanent decals for words you don’t want to have to rewrite everyday. 36 Clever DIY Ways To Decorate Your Classroom. I also like the ribbons window treatment & iron-on fabric letter ideas.
For organizing file folder work jobs! Dish drainer used for organizing files, etc. The cup in the corner could be used for pencils or dry erase markers (if your file folder games are laminated). Or take the cup off completely.
I bet you've never realized that you can find a lot for your classroom at a hardware store! Melissa from Got to Teach shares a super helpful list of all of the classroom supplies you can buy at your local hardware store.