AvatarBarbara Rubenstein AceeAvatarAvatar16 Collectibles In Your Attic You Didn't Realize Were So Valuableverified_publisherPopular Mechanics - By Kelsey KlossYour old yearbook could be worth a lot more than you think. They may look like clutter or trash to you, but could be worth thousands at an auction. Vintage computers Keep a particular eye out for Apple computers. "Perhaps your father bought an Apple in 1977, which really isn't that long ago," says …