As everyone said, Amigirumi. I recommend a variety of keychains and small plushes with a few medium/large plushes. You’ll want more small stock with lower prices, but still bring some higher priced stuff. Small items like scrunchies and face scrubbers also work. If you’re feeling adventurous, try hats and bags. Car ear beanies and bucket hats are easy and appealing as are grannie square shoulder bags. I don’t reccomend anything over $50 for small events, or $75-100 for medium-large events. Avoid super time consuming things like cardigans and really big bags, unless you know people bring serious $$$ to the event (large conventions and ren fairs count for that, as they usually attract both expensive vendors and rich buyers)
You can also tailor your stock to the events. Fall celebration? Halloween stuff! Convention? Nerdy stuff! Close to a holiday and the event has no theme? Holiday stuff! Ect ect. Have fun!!