The iMac G4 has been around since 2002, and it's just as stunning today as it was almost a quarter of a century ago. Thankfully, you don't have to ditch your iMac G4 for something less exciting just to be able to actually use your computer. You can buy a kit that puts an M4 Mac mini right inside that thing and, best of all, it's entirely reversible. Beauty and the (performance) BeastThe idea of putting a Mac mini inside an iMac isn't something that I'd come across. It also includes a link to where you can buy everything needed to complete your own M4-powered iMac G4 conversion, too.