Stretch Armstrong
This latex rubber toy is filled with gelled corn syrup, which allows Stretch Armstrong's arms to retain their shape before shrinking back to the original size. People loved the concept of a stretchy action figure—so much so that a vintage Stretch Amstrong recently sold at an auction for $4,000. Others have sold for upwards of $10,000. Talk about stretching your dollar.
Teenage Mutant Ninja Turtle Action Figures
In the late 1980s and early 1980s, Teenage Mutant Ninja Turtles blew up pop culture. Originally a comic book series, the franchise expanded into the well-known cartoon series still in syndication today. Mint condition figures can go for $500 apiece, and rare pieces might even be worth up to $5,000.