My favourite idea in modern fantasy is potion candy.
For example in Bayonetta, alchemical recipes are turned into lollipops. They’re tastier, easier to carry around than bottles, and modern crafting techniques means they’re more potent than traditional potions.
Oi, just think of what this entails.
An aesthetically inclined potions master’s or alchemist’s shop would look EXACTLY like a manic pixie dreamland candy store.
Little plastic baggies tied with pink ribbons full of bright and green yellow lozenges that regenerate your health, clearing up colds, the flu, and fevers in a minute.
Color-changing gummy bears that allow you to see in different wavelengths, negating invisibility spells, and opening up a whole new avenue for finding your way around town using the ‘invisible ink’ painted directions for tourists.
Candy bars of chocolate, studded with nuts and other magical ingredients that melt in your mouth, granting you the ability to speak in different tongues and mimic bird calls.
Tins of mints that freshen your breathe and allow you to breathe underwater, coming in packs like ‘grow some gills’, ‘partial shark bite transformation’, and ‘salt water seelie fins’.
Licorice that help you repel anything from tiny insects to terrifying creatures that skitter in the dark - as long as they’re sensitive to the smell of elderberries or whatever the heck the potioneer or alchemist decides to flavor it with.
Gum that, when chewed, spat out, and stuck to an object, forms an incredibly sticky substance which can harden and patch up the hole in your boots and other flavours that waterproof or fireproof or somehow enchant the thing you stick your gum too.
Incredibly expensive gift boxes of Ferrero Rocher-like chocolate balls that are doused with liquid luck. They’re very potent, individually wrapped, and only sold to select clientele.
Gobstoppers that temporarily grant you super strength and stamina with a incredible healing powder at the center so that if you accidentally tear a muscle while lifting something the wrong way, you just bite straight into it and BAM, you’re alright again.