Back in December, we installed a murphy bed in the guest bedroom. The room is kind of small, so the guest bed was taking up most of the floor space in the room. A murphy bed leaves more of the floor open when it is not being used. I saw some nifty-looking wall brackets in the Woodcraft, and these looked good to the landlady, so I went for it and decided to install a wall-mounted fold-down desk.
The desktop is actually four lengths of 1by8 that I edge-glued and doweled. Then, I cut the desktop to length, sanded, stained, sealed, and finished. After that, I just had to mount the brackets on the wall, and attach the desktop to the brackets. Easy peasy.
This can also be my entry in The Space under the Window.