I found a C-Line Sheet Protector at a local craft store that I really like.
It works good for protecting my reference papers while turning. The Neon Orange color makes it easy to find. It is made of tough clear plastic with a nice grommet that allows me to hang it up.
They are made by C-Line.com. Style #43912 Workshop Ticket Holder.
You can get them on Amazon. Around $4 each. Or 25 for $26. Search for C-Line 43912