what you need:

• an inflatable ball, something like a balloon or a beach ball, depending on the shape and size you want (we had beach balls with diameters up to 1m)
• vaseline
• wallpaper paste
• a ball of white wool
• lamp socket, lamp, etc.  (I’m not the biggest hero when it comes to electricity)

what to do:

• inflate the ball to the maximum and hang it somewhere, where you can easily move around it
• cover the ball with vaseline, this will make it easier to remove the ball afterwards
• drench the white wool in the wallpaper paste and start twisting it around the ball, you need to make sure the circles are always around the biggest diameter of the ball, the threads that go around the entire ball will give the needed strength
• keep circling the ball until the only spots that aren’t covered are triangles of about 3cm wide, our experiments have prooven that this is what you need to get a firm construction
• let it dry for 24 hours
• carefully let the ball deflate and get it out of the woolen sphere
• insert the lamp socket and lamp, and try attaching it  (you might have to be a little bit creative here, sometimes you can find a hole in the construction that can lock in the lamp socket, or you might have to you use some wire or something else)
• … and your arty farty light element is done!

If you have the space for such a big light element, you can attach several spheres from different sizes to a bike wheel, like we’ve done here.  But you can just drop the bike wheel and use one sphere as an eyecatcher in your room.