I find myself browsing Craigslist for interesting guitars even when I'm not looking to buy. You see a lot of strange rare equipment pop up on a fairly consistent weekly basis. Post hideous monstrosities, masterpieces, oddities, or just something you'd love to own. Just came across this '59 Supro Belmont up for $1200, one of the ugliest guitars I've ever seen.
1959 Supro Belmont Vintage Electric Guitar
And this American Fender with an odd "Burnt Natural" finish / walnut neck, one of 79 made, for $2200.