Has anyone built one of these nifty Poster Light Boxes (example) that snap open so you can replace the poster regularly? If so do you have a DIY guide or any pictures of the construction process/end result? Most of those things go for almost $400 bucks, but using rope light, some paint, some hinges, and some wood has to be far less expensive... While I'm at it, has anyone made any standard poster frames that are more cost effective than shelling out 35 bucks for a 27x40 frame? Pictures and guides welcome.