At least some of you must surely have one of these lurking around in storage somewhere? There was a time when every child pestered their parents for a Game Boy every Christmas until they got one. The hand-held consoles were a runaway success for Nintendo, and featured games starring all the Japanese manufacturer's most famous creations including Mario and Zelda. Then, technology progressed, and they became obsolete - until the vintage market woke them up once more!
Even a basic-standard old Game Boy in good condition might attract bids of up to $1,000 on eBay, although you'll have to include the packaging to get that kind of price. Nintendo's special edition - which was coated in diamonds and gold plated - probably isn't as likely to be hiding under the bed in your spare room. If it is, though, it's currently worth anything up to $25,000.