The niche I went into was making rolling trays I wouldn't mind my grandma seeing, because they don't look like the cheap steel Rick and Morty trays that they sell at head shops.

I don't know why I'm able to make so many sales. A lot of the other shops that are in this space don't sell as many, so maybe it is design + price point? At crafts shows (which I haven't sold at), similar sized but much "trashier" trays sell for double what I sell for on Etsy, but I'm not able to increase my price at all on Etsy (fucks the algorithm up).