[HappMacDonald]

I'd hazard to guess that REPL of a simple virtual machine would work wonders for teaching about pointers and memory management.

I can't recall exactly but I think https://godbolt.org/ might do that for example?

[TheOnly92]

A simple virtual machine might be nice, but imagine the pains of trying to guide students to install something across different environments.

Godbolt is a compiler explorer, it shows disassembly of a code but there's nothing to visualize each step in the process.