In 2021, McDonald's phased out its plastic toys, creating demand among toy collectors. One toy set in particular, McDonald's Changeables, have

even sold for up to $200 on eBay.

Changeables, the chain's transforming toys from the late 1980s, are one of the rarest vintage Happy Meal toys, with people apparently willing to pay a decent price for a set.

Based on previous sales, you could potentially sell a set of about eight different Changeables for roughly $60 to $70 online. Toys still in the packaging often sell for more.

Meanwhile, larger sets and toys in good, original condition have sold for $100 to $200. Considering that a Happy Meal cost a little over $1 in the 1980s, it's a really good deal.