I got really stuck on a nature thing when we talked about creating an environment in your classroom so this tree looked really pretty and I thought it would be awesome to have in a reading corner where students could read in the "shade".
Craft room organization: Use pegboard and small buckets as functional decor. Eliminate cutter by stashing marking tools, thread, and other small quilting notions in cute painted, wooden, or metal containers.
Make these with chalk board paint and then put them up in my classroom so I can write the amazing stuff my children say all day long in them. You could also write classroom rules or welcome messages, instructions, messages to parents, focus wall language.