Today's project was upgrading an iMac 21” (2.7 GHz i5, Late 2013) to be useful for my friend's school. From a 5400rpm 2.5" spinner to a SATA SSD, 8 to 16 GB RAM, and Sequoia 15.7 via Open Core Patcher.
This is probably one of the worst computer designs ever.
It's taped together so you need a kit of shaped strips to re-assemble it.
Then both circuit boards lever in under the "chin” so you're terrified you're going to scrape off some SMD capacitor on a screw when maneuvering. 0/10 design.