Transformers
The Transformers franchise has always been a pop-culture staple, but these action figures from the 1980s were quite the hot commodity. A mint condition Transformer still in its box could earn you $2,000.
American Girl Dolls
American Girl dolls were first released in 1986. They portray girls from ages eight to twelve of varying ethnicities, faiths, time periods, and social classes. The three original American Girl dolls, Kirsten Larson, Molly McIntire, and Samantha Parkington, are now discontinued, bumping their value to over $1,000 per doll on eBay.