Today you can get free credit in the Piccolo Me app by entering words found on the takeaway cups into the voucher section. I have found the following 8 there may be more:
PICCOLOD
HAPPY
HUNGOVER
STRONG
TIREDAF
BRAVE
LOVED
CUTE
IMPORTANT
DOPE
enjoy
smartposter commented that the expiry date for the credit is 27/3/2023.
Thanks, all but TIRED worked for me