Vintage Etsy.

Really interesting mix of items, including a lot of stuff you could use in projects.

High Street Market: Very Mad Men-esque vintage home accessories.

 We Sell Used Gods: Exquisite antique prints and bookplates.

Salvage Nation:  Totally cool vintage signage, letters, and other odds and ends.

The Thanatos Archive: where that creepy Nicolas Cage photo came from. Also, lots of other intriguing antique photography.

Peg and Awl: beautiful items constructed from re-claimed wood. Also, amazing book necklaces that I would never wear but adore looking at.

5 and 10 Vintage: huge selection of vintage accessories from a wide swath of eras. Great prices, too.