Now, for the Ikea hack over load, visit, Ikea Hackers Net. People have hacked EVERYTHING. From functional furniture to the bizarre. There are great Billy bookcase built ins, to rat cages and cat litter boxes. Regardless of the function in your own life, its still interesting to take a look around.
Here is one of my favorites from Better After, the whole article is at their website. This is the Hemnes vanity and the Rattviken counter top for a total of $379.00. This is another one of those website that you can spend all day at- so don't say I didn't warn you :)