From Chair to Stool
Here’s a cool project on Apartment Therapy: convert an old chair into a stool. Reader Hilary Hahn took the chair from this:

To this:

It’s a pretty simply idea. Cut off the seat of the chair with a jigsaw, re-cover the seat with some fabric, and paint. Hilary uses the stool in her entryway for when people need to take off their shoes.