@ Lauren- something for boys-Portable LEGO Tray - Brilliant! You could even hang these on the wall of the toy room. Also, great for a portable play surface for the kids when away from home, just make to fit inside a book-bag or back-pack :-)
Make a tray from an old frame. Need a frame - paint of decorate, frame a get-well card, message or pretty pic or photo to personalize it; screw 2 door handles into the wood . and you've got a tray. Great idea-I am going to use a old silver tray.