We try to keep costs really low, so we choose to just print out flyers and tape it to whatever we hand out (pizza boxes, bags, etc).
Maybe if there's a possibility that you can secure a cheap way to print it in paper bags, that can help you a lot becauuse you don't have to spend too much on tape and paper since the container for the food has the QR codes. I hope that you will expand to the entire state and hopefully international.