If I buy GCs, I keep receipt and card in package until used to feed BB or purchase MO. I trash GC receipt, card and pkg after this step.

I keep BB load receipt until verified online. I keep MO receipt/stub until MO deposited and cleared bank.

If I feed RB w/ CC, will keep receipt until verified online, then trash.

ETA: I only keep receipts during the period I'm "at risk" in terms of unused GCs, MOs in transit, etc. Once these items have been turned into cash, receipts to me are pointless.