Many people love stickers since they can be use on laptop, cups, notebooks, planner, and more. If you can create cool design, people will surely buy from you.
Digital products like budget chart, planner, resume, wedding cards, etc. sell really well on Etsy. If you can stand out with your design, you can sell many digital products on Etsy.
No doubt jewelry is the hottest and trendy product. If you make a unique and charming piece that is affordable and special, people will surely buy from you.