101 things in your attic that could be worth a lot of money

256. Holographic Batman Cereal Box

Manufacturer: Ralston Cereal (now General Mills)
original price: $1.50*
Worth Today: $40*

The Ralston cereal company has been in business for over a century, although it is currently owned by General Mills. Ralston cereal is considered a healthy alternative to oatmeal, which is high in fiber. Ralston has had many themed cereal boxes over the years, including a holographic Batman one.

The holographic cereal box was developed in 1989 and boxes, at the time, sold for a few dollars. The run was limited, so Batman boxes weren't very common. For this reason, they have increased in value over the decades. On eBay, Batman's Ralston holographic cereal boxes sell for around $$ 40.