Is there any other different mixtures or foods that react the same as Coke and Mentos when inside your stomach for inflation? (do not suggest banana and sprite; I honestly
hate both of those things and I know those two are similar but I think I'd probably fail doing that)
Someone on another webpage said somthing about nerds and soda, you could give that a try. Really you want anything that has a lot of nucliation sights so the gas trapped in solution can escape into the atmosphere... Or your belly XD