Wall mounted rolling sketchpad

Pesky human writes –

I like to sketch on vertical surfaces. I came across some wide paper rolls and wanted to figure out a way to use them as sketch pads. 20 minutes and $10 worth of closet brackets and dowels later, mission was accomplished. If you are not drilling brick walls like this, you should be able to throw something like this together in about 10 minutes.

Wall mounted rolling sketchpad – Link.