Make space that wasn't there.

If you've never heard of Ikea hackers you should really do yourself a favor and check it out. They have an assortment of projects people submit that takes parts from Ikea and use them differently than intended.  Sometimes it's a pretty radical transformation other times it just mixing and matching various families to get an end result that is different than how the package is marked. It can range from really easy when the families are cut with uniform dimensions and holes, to really hard when people completely free form structures using pieces from the box.

This particular post from Ikea hackers was about a built-in closet with sliding doors that transformed a fairly useless space into a closet. The end result is really polished, and what got me interested in it in the first place.

Via ikeahackers