This will help you get back.
This book in the BryonySeries "The Adventures of Cornell Dyer" subseries features a cafe with 101 different sandwiches.
Take a peek inside your refrigerator. What do you have on hand to make a new and tasty sandwich?
Or brainstorm by yourself and the child in your life how you can change out common ingredients to make a whole new sandwich.
You can read the Cornell Dyer book together while you enjoy your new sandwich and nod knowingly at each other when you reach the "you know what" part.