I have made some advertisements to go onto sandwich's and other foods purchased at Pickle's. The advertisement is a sticker and would be stuck on every person's order so that they know about the new app and information as to why it can help them.
The sticker incorporates background and type from the app for continuity.
There would also be an advert drawn onto the menu chalk board in store for an added extra push. In a previous post I have also proposed the idea of chalk boards outside the shop and bus stop posters.