Russ or Rusty and Percy were really my only ideas, but I love @AcutePunubiris Kitt’s idea of Pippin and @greyblue Grace’s idea of Reese! You could probably do Cyrus but at that point why not just use Cyrus lol. Other stretchy nns I thought of:
Izzy
Sid
Compound nn like Cypress Ambrose “Sam”?
Cece
Preston
Ike
Cyr
Good luck!