Found this one here, and hope to place it in our entryway when it arrives.
Also spotted this on Pinterest and think I will give it a try. It would work great in my classroom and would keep files I use frequently right at my fingertips! You just need a paper towel holder, some metal rings, and some plastic pages. I can see this coming in handy for my guided reading groups - just pull what I'd need for each group as I meet with them!
I'll keep you posted!