There was a fashion for cataloguing all miniature spoons as snuff spoons, much like the way all very large serving spoons get catalogued as basting spoons even though very few of them will ever have been used for that purpose.The term snuff spoon should be avoided as misleading apart from the very few cases where the spoon is still associated with a snuff box. Toy
spoon is a more sensible description for unattached spoons if you accept “toy
” in its wider sense of a small trinket. Very, very few of these spoons will have been intended or used as children’s playthings. I prefer to call them miniature spoons to avoid misleading anybody.
One can of course have some guesses at the original use in particular cases. A set, or part set, of tiny spoons may have been intended for a fashionable Dolls House. Slim proportions may suggest a spoon was once kept in an etui, though that doesn’t tell us what it was actually used for. Some may actually have been condiment spoons. And so on. But generally speaking I imagine that if a spoon maker were asked to make a miniature spoon of a certain size for, say, a dolls house, it would look much the same as a spoon he was asked to make for, say, a snuff box.