Early Kenner figures still on their cards, especially rare variants, can sell for thousands.Mint-condition Furbies still in the box sometimes sell for much more than their original price.Sealed He-Man figures from the original line can bring in serious cash.Some rare early ponies and play sets are highly prized by collectors.Unopened early models have become collectible for a new generation of nostalgic fans.Complete original sets with all their tiny pieces can sell for hundreds of dollars.The earliest hand-signed dolls are especially valuable to collectors.Sealed sets that are no longer made can sell for far more than their original price.Original figures still sealed on their cards can be worth a surprising amount.The very first Barbie from the late 1950s, in great condition, can sell for thousands.One rare prototype car is reportedly worth six figures, so check those old die-cast collections.Early Transformers still in their original boxes are highly sought after by collectors.Most are worth very little, but a few rare ones in mint condition have reportedly fetched big money.An unopened copy of a classic Mario game once sold at auction for over a million dollars.A rare first-edition Charizard in perfect condition has sold for hundreds of thousands of dollars.