I recently aquired one of those huge pilates balls. The plan was (and still is) to use it as a mold for a giant paper mache globe and/or giant paper mache Death Star. Last night, however, I had the idea that I could cover it with Great Stuff (spray-on insulating foam) and sand it down to the desired shape.
As you can see, I didn't get very far with one can, and sanding it down would have been a nightmare.
I was about to dump it when I had an idea. Another item on my long to-do list has been to make a lampshade for the overhead light in the dining room, which suffers from quite a bit of glare as a result of cheap military housing construction (we live on a former Navy base). Considering this, I was able to snatch awesomeness from the jaws of suck, thusly:
All I had to do was screw in a couple of hooks to the ceiling and it was held in place perfectly. Here is the overall effect, giving the room a much softer and warmer glow:
And a pretty, if not properly color balanced, picture:
NOTE: if you try this yourself, be sure to use gloves, since Great Stuff sticks amazingly to skin - you have no grace period in which to wipe it off, and only heavy scrubbing over several days will get it off. Really, don't even think of trying this without gloves. Once it's dry you're fine, but remember that there might be wet/sticky parts on the inside even after the surface is very hard, so wear gloves removing it from the mold, too. I still have some gunk on a few fingers, several days later.