We had a cashier who was pocketing coupons. He wasn't giving them (or even offering them) to the guests. In between transactions he'd 'clean up' the pile of coupons, pocketing the good ones (Starbux, Target Cafe, etc). My FATL noticed him using coupons every. single. time. he came over to FA or SB so they mentioned it to the ETL.
He got AP's attention & was eventually termed because he was also switching out & pocketing giftcards.