I think we should incorporate an area in every store that has sheets gift items. Just like the ones in the Sheets shop. This way you can get tons of impulse buys and also cater to the many out of towers that are traveling through. This is also a great way to get the "Sheets" name out there and promote our awesome stores.
I use Sheetz gift cards at the gas pumps. When I need to use more than one card, the pump makes you wait 30 seconds telling you to take the receipt before it will allow you to start a new session. Please allow multiple gift cards per session and/or remove the delay at the receipt.
Sell Sheetz gift cards at other stores (Giant Eagle, Shop 'n Save, etc.).