That's the beauty of MOLLE webbing. If you don't have enough pockets. You can always add more. And you always need a snack pocket. Though I suggest the button closure ones. Don't give away your position during snack time.
If shit hits the fan, the ambient noise level is loud enough to mask a velcro or zipper pouch opening anyway... Bundeswehr surplus G36 double mag pouches are perfect size for a 50cl soda can/bottle, and a STANAG mag duelling pouch is perfect for two 100g chocolate bars 😏