I've been put in charge of inventory at my job, and I've been trying to figure out for months how to manage it (it was just plain chaos). I was instructed to give it some type of structure..
I was going to use MS excel, until I decided that I didn't to put in that much work lol. I remembered reading about Filemaker. I decided to use a PPC mac for something productive for once, and set up an inventory.
I decided on a 500Mhz iBook G3 I had laying around, that also happens to be the only laptop I own other than my 15" PBG4 and surface pro that has a working battery. It's also running OS 9 because it only has 256MB of ram. So far I've set up a pretty good database of the inventory on it. It's been working perfect so far. I usually don't like using OS 9 but for this single purpose, it's great! It boots to the desktop and opens my database faster than my work computer (a Dell running Windows 7 with an i7) even gets to the login screen.
Don't tell me PPC Macs, or even Mac OS 9 aren't useful in 2020!