The iMac G3 was the very first computer I got to use. Our school district had several in every classroom and a couple computer labs. I distinctly remember using Scholastic software called Reading Counts, as well as KidPix on OS 9. Eventually, some of the older G3s got replaced with the eMac running OS X and then the district switched completely over to running Windows XP on Dell. That brief exposure to Apple and the creative colors makes me miss the times when using computers felt fun.
I think the closest I felt to that later on was around the time when Vista came out and everyone was using WindowBlinds to change their theme up.