I think that's it. PCB itself is rather trivial, it's the RAM, but also things like switching regulators (there are others, but then it's a redesign), maybe even stuff like connectors (which don't burn....).

For a science project, we need to manufacture magnets. It's not easy to find a company who has the right iron right now, and it's hard to get, with long lead times. The supply crisis is real.