I'm proud of my first "Ikea hack." I combined the parts from two Lack Side Tables ($7.99 each) to make one cube-like side table that looks very similar to West Elm's Parsons Cube Side Table ($149 each). All it took was some Liquid Nails to glue everything together! So for about $15 plus the cost of Liquid Nails ($3) you can make your own "$149" table.
I came up with the idea while doing research on Ikea Lack table hacks. You can see all the great examples I found on my blog.