How would I make copies of keys that either say "Do not duplicate", are of that general type with like a locksmith business etched into it, or is some fancier "Best" Cormax brand?

I'm really close to getting into stable housing, been roughing it for a few years, and do custodial to make ends meet. There are a few keys that if I had copies of them would let me use a shower, toilet, A/C and a microwave for a few months then destroy the keys when I move in to a place.

Any ideas?

Sorry to ask, thank you for any direction or guidance you might be able to provide.