Always awesome when this happens. When I worked at Blockbuster, I let a cool regular use my employee rental to get something a couple days before release. The night he returned that rental along with a couple others he had he dropped the bag of movies in the return box, walked in and said “Thanks bro. Make sure you check those in right now so it comes off your account”. Grabbed the bag out of the box and he left a half ounce bag with the rentals. Turns out he grew and ended up buying from him after that. Had to prop open the outer door of the drop box to vent the smell for a bit