If you made the two digit code be 0x4e73 instead of 0xffff that would give it the bech32m address bc1pfeessrawgf (ie “bc1p”, “fees”, checksum).
You can choose any three letters in the bech32 charset followed by either q or s, followed by the 6 char checksum. (0xffff is bc1plllsqd8ech; 0x0100 (1) gives bc1pqyqqgs7ult; 0x0001 (256) gives bc1pqqqs4em24r and 0x0000 gives )bc1pqqqqqcnjqs
EDIT: testnet/signet has 4e73 look like tb1pfees9rn5nz or with regtest bcrt1pfeesnyr2tx. bitcoin-cli decodescript 51024e73 if you want to try other combinations for something fun.