We love Ikea hacks and this one may be the geekiest and easiest to date. How it was made after the jump...
Vince Welter bought Ikea's $155 Vika Lauri desk with frosted glass and aluminum sides. He then installed Ikea's $50 Dioder lighting strips in a straight line on the underside of his tabletop, towards the front.
They change between seven different colors with a click of a switch. 
Photo: Vince Welter
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This is so amazingly cool. I have some of the dioder light strips (they used to be under my couch), and was wondering what I should do with them. Now I know.