They seem terribly small and limited now, but when I started in IT they were a real workhorse computer and for a time they threatened IBM’s dominance in the IT space. (Then the PC and DOS and Windows came along and did even more to challenge IBM.)
(Image from here.)
Here are two interesting pieces of innovative things people have done with Minecraft. The first one, New Minecraft Mod Teaches You Code as You Play, is a novel way to learn how to code. If you have a young one who loves Minecraft and whom you want to learn how to code, this may be a good way to do this. The second one is an amazing story found on Reddit: My experiences with running a Minecraft Server on an IBM Mainframe.
I was amazed he managed to get it to run, albeit slowly. Needless to say, a Mainframe is not an ideal platform for this software. Still, that he did get it to run is a testament to his ingenuity and also the flexibility of Minecraft and the IBM Mainframe.