It's very old news but this is one of my favorite lighting DIY's ever. It's from the Brick House and based on Lindsey Adelman's make-it-yourself version of her beautiful chandelier. I would love to try this in my home.
(Convincing the husband to help me is another story, though. Last time we replaced lighting in our home may have ended up in a power outage, a gash in his thumb, and some slight electric shock. Ha.)
p.s. SeeSaw used another Brick House tutorial for the shelving in our studio.