I have occasionally said this about myself as a joke, as I think I'm one of the few people that's actually worked on every element of that stack at some point in my career. Including a restricted subset of TCP/IP in Verilog.

I mean, if you really want to make it a challenge then don't give them a processor, give them some large sheets of acetate and some coloured tape.

(I was going to include a picture of the 6502 rubylith for that last para, but found this amazing anecdote instead: https://hardware.slashdot.org/comments.pl?sid=1939704&cid=34... )