These light fixtures from MESH Architects score very high points. Clever yet simple; industrial yet romantic. DIY-able? According to our very own Chris, absolutely! (Here's a tute to prove it.) But if you're not feeling handy, you can snag them ready made at MESH Architecture's Etsy shop.
The fixture below will set you back $145, so a custom install like the one picture above is, you know, not cheap.