Private GA for the top ten best DIY projects

Looking for something new to do while on vacation and want to see your suggestions. The DIY project should contain concise directions or at least blueprints/schematics. I have and can work with the following materials:

PCB
Fiberglass
Metal
Wood
Any and all electronics
Clay
Pepakura
Mache
Foam

Things I have already built:
Arcade cabinets
Touchscreen jukebox
Iron man suit
Body kit (car)
kick panels/ custom audio
touch surface interactive media (using both wiiMote and kinect w/ a projector)
auto interior (dashboards, consoles, gaming, etc.)
Many, many custom PC builds
exterior and interior home additions (media closets, hydroponics, smart appliances, entertainment centers, hidden doors)

I'm looking for something new and fun. the more creative, the better. Preferably something I have not come across yet. I've already seen all the cosplay outfits, the wolverine claws, the portal builds, etc. I have an interactive LED coffee table, an interactive whiteboard, and a "smart home", so this won't be an easy one. the top ten submissions get an entry to a Battle Block Theater GA.