Charge extra for more elaborate toppings. Set up a topping station with onions, cheese, pickles, potato crisps, bacon or other meats - the possibilities are endless. Offer different kinds of hot dogs. Have normal dogs as well as sausages, veggie dogs, and corn dogs.
Consider adding variations to the jelly and custard, like offering soda instead of custard. Arrange the ingredients on a table so that your customers can choose their favorites. Consider charging more for higher-quality or more expensive ingredients like cream or ice cream.
Offer toppings like whipped cream, sprinkles, chocolate sauce, or crumbled Oreos. You can also sell soda floats as an alternative to milkshakes. Have a variety of sodas, and add some to ice cream to create the float.
Use string, beads, rubber bands, or any other crafting method to make bracelets, necklaces, rings, and earrings.
