Loving these cords from colorcord.com, in just about every color under the sun. At just $20, you could buy a couple and swap 'em out with the seasons (if you're handy with electrical work, that is.)
And just to get you inpired, here are some fun lighting DIYs from around the blogosphere.
Dodecahedron at View Along The Way
Copper Geometric Pendant fixture at Design-Milk
Jute-wrapped, via Hand Made Home
Faceted pendant (that's folded paper!!) via the 3 Rs Blog
Wood veneer woven lamp on Poppy Talk
Lace Doily lamp on Dos Family (with colored cord kit!)
Um, I am feeling like the least creative person ever all of a sudden!
Have you created some whiz-bang amazing light fixture from scratch?