I used to do this in the 80s. It saved ruining the stickers.
Did he ever get a copy of "Senior Administrative Nurses"?
At the university I went to in the 90s, there was a bank of 5 Macs. Each one had a printed label next to the power button instructing users that it wasn't the disk eject button.
My university had a bay of Macs in the IT suite with laminated cards taped over the power button to warn newbies of this.
https://en.m.wikipedia.org/wiki/Spotted_dick
It's a steamed suet pudding made with raisins or sultanas which make it look spotty.
I had a VIC-20, the predecessor to the C64...
I counter with:
Seeing as the B7 Federation were the Star Trek Federation turned 90 degrees...