Apple Macintosh Classic. This wa my forst Mac, I bought it at a yard sale and thought it was broken until I found that you had to press a key on the keyboard to power it on! I now have two, both work; one runs System 6.x and the other System 7.x
Apple Macintosh LC. Another yard sale find, works fine but the case doesn't close all of the way because of a gigantic hard drive it was upgraded with. Works fine.
Apple Macintosh Performa 600. Has some sort of lock-down software left over from the school that had it before me, makes it near useless until I can re-platform it.