I would have never thought of this.
Best Flipping sub book!!! Does NOT link to teachers pay teachers ;) Free!
Use dvd cases with solid paper for mini "white" boards...everybody gets a glove/sock for an eraser to store inside the case. Smart idea! One side could even have staff lines??
Teacher Organization With Supply Labels - Free downloads
Free Binder Covers (Editable Versions Available, too!)
"No Name" board for holding nameless papers