solutions for shading young tomato plants

[jamserg]

I'm trying to find a cheap solution to shade young (not tall) tomato plants individually. The only simple solution I know is a chair over a plant. But I wonder if there's a do it yourself solution for a portable shade (probably involving a shade cloth), like a shade box, or shade screen. If anyone created such a contraption, I'd appreciate to hear about it. The sun is brutal right now and already claimed a few plants (yes, they were hardened off).