The Sega Dreamcast is one of the more memorable, although ill-fated consoles to be released. Although it had a pretty short lifespan, the legacy is upheld by legions of fans worldwide, and one of them has gone so far as to pack in the entire Dreamcast into one portable format, crammed into a plastic jewelry box instead. This means it comes with a 5″ LCD display and a portable power supply – although the extent of its portability is still limited by just how long your power cord is.