One of the most popular games consoles of all time, the Sega Mega Drive 2 (known as the Genesis in North America) came out in 1993 and retailed for $149.99, which is $260 (£210) today. It was a smaller, lighter version of the original console. Rare special editions are worth the most money these days. Boxed examples of the FIFA 96 Australia/New Zealand version for instance sell for up to $1,200 (£965).
Now discover the surprisingly valuable old stuff you might have at home
The first real clone computer, the IMSAI 8080 mimicked the iconic MITS Altair 8800. Released in 1975, it was priced at a budget-busting $600, which is $2,820 (£2,268) in today's money. A must for collectors, the machine had a starring role as a hacking device in the 1983 movie WarGames. If you have one in storage that works, it's likely to be worth up to $2,000 (£1,608).
Remember spending hours playing Sonic the Hedgehog? More than 30 million units of the Sega Genesis console, known as the Sega Mega Drive in Europe, were sold during the 1990s. The release price in 1989 was $189, which is $385 (£310) today. The original Sega Genesis 1 is rarer and a factory-sealed model in its box sold for $2,075 (£1,669) on eBay not long ago. Used working models however go for up to $300 (£240).
An early 8-bit computer aimed at hobbyists, the System 1 was manufactured by British firm Acorn. It was designed by Cambridge University undergraduate Sophie Wilson and Professor Steve Furber, and released in 1979. Working models of the vintage computer, which is revered by collectors, sell for up to $2,550 (£2,050) these days.
Apple's very first product, the appropriately named Apple I was designed and assembled by Steve Wozniak back in 1976. Steve Jobs sold his hippie van to cover the manufacturing costs. Only 200 units were produced and they each sold for a symbolic $666.66, which is $2,960 (£2,380) in today's money. Today, just 63 are known to exist and only eight are in full working order. The most valuable of the bunch went under the hammer for an incredible $905,000 (£727,710) at a Bonhams auction in 2014.
Search your home for these free collectables that are worth a lot of money