So, the gnomish fizzy drinks. They're not that good mechanically, but they're fun to give to people as a drink without telling them. But they're rare and thus hard to get in large numbers.
SImilarly, fireberries and iceberries lack a use beyond treats for animal companions, and before I consider another suggestion in a week they thus have little use elsewise.
Put simply, I would suggest the gnomish fizzy drinks with the breath attacks be made into a craftable recipe, or a recipe of form even if they aren't 1:1 the gnomish fizzy drinks and given a fun use for RP. Similarly, the ones for the lightning and gas breath attacks as well, even if not through the introduction of berries.