I have run out of room in the garage and so I decided to construct some sort of shelf under the deck outside so that I can prime parts. I had some pressure treated 2X2s on hand, so I constructed a frame and covered it with 1/2" hardware cloth (like chicken wire, only squares). I then fastened the shelf to two of the posts under the deck and used some plastic coated cable I had laying around for a support. It looks goofy, but I think it will work.
My new paint shelf, held to the posts with door hinges and supported by cable
The paint shelf in the folded position
Sophisticated latching mechanism to hold the paint shelf in the folded position