American Science & Surplus
I've got to make a note of this place before I forget. It's called American Science & Surplus and it's like the home office of every surplus/outlet store on the planet. Sure, Archie McPhee carries a lot of this stuff, but AS&S carries the biggest and most insane assortment of stuff I have ever seen. If you ever saw something for sale at some roadside souvenir stand or theme park gift shop, they probably have it. And the item descriptions are at least as entertaining as McPhee's.