I recently got my hands on an old eMac (I think c. 2003-2004), from a garage sale for my baby sister and brother's first computer. They're very sleek and I love the way they look. It has OS X Tiger on it, but I had to reset it to default and I'm pretty glad that it runs so well and is in such mint condition. After some fixes and updates, it's all good to go and it's actually quite a speedy machine. I might use it as a Facepunch computer sometimes. It runs surprisingly smooth with OS X on it..
I think I'll get a PowerBook or an iBook soon just to have as little collectible items. I'll post pics when I make the decision sometime this week. Post your pics + stories of your vintage Macs/Apple devices.