folding leg system
Amazon.com: Foldable Wooden Portable Laptop Table Bed Stand Book Tray Notebook Computer Desk: Office Products
Folding Table Leg Hinge Hardware H-65800L
$100-$125 fold up/down brackets for wall mount table or bench seat http://www.kitchensource.com/supports-brackets/ha-287.42.403.htm
Use this type of hinge for fold down/built in/ deck bar. 2013 Jackson Deck.
folding shelf brackets to make folding desk, this would be fantastic for extra crafting space.
Lock-In / Lock-Out Folding Table Leg Bracket, for 38mm Wide Legs
D.H.S. Posi-Lock Folding Leg Bracket for Wall Mounted Work Bench / Fold Down Table (2 pcs.) - - Amazon.com