The swedish design duo David Ericsson and Marcus Berg (DMOCH) has made the Francis lamps. These lamps are kept up by these small wooden knobs that you put up on the wall, and you also can use these knobs to decorate with the electronic wires.
You can get the Francis lamps in a lot of different shapes, colors and sizes so you can put these lamps in different groups and formations. I think these lamps are fun, and I like that the fixing method is really creative and makes the lamps even more interesting.
If you want to see more pictures, you can visit DMOCH's site, www.dmoch.se.