Back in the 80s/90s, Sheetz had the refillable plastic bottles with straws for soft drinks, called The Big Squeeze and a smaller one called My Main Squeeze. They were awesome! And a refill of those was cheaper than refilling a regular cup. Bring them back!
I'm not sure when the 1/4 lb Big Dawg hot dog disappeared from the MTO menu, but you should bring it back. Even if not a full time return to the menu, perhaps limited runs (think McDonald's McRib).
I want the following t-shirts/stickers. It! Cola, Papa Sheetz, and Big Pig also the Regular Coffee Logo with the guy dumping coffee into his head. There's a "Friends Don't Let Friends Say Sheetzes" shirt make a "Friends Don't Let Friends Eat WaWa" shirt. Sell these things in a vending machine like they do in Japan.