Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4917242.
My wife loves La Fermiere yogurt, so we're constantly throwing out the small ceramic jars they come in. I used a few for planters, but we've not found a lot of uses for them. We occasionally use one for a container for something, but that necessitated a lid.
So I designed one. :^)
I actually designed this back in February 2020, but I never thought to upload it until now. I printed it in a flexible (TPE or TPU, don't remember, but I think it came from Microcenter) and it came out perfectly. It fits very snugly, seals well, and looks nice (personal opinion, of course).
Print with 3 walls and you won't need infill. I personally like setting the bottom initial layer and the top surface skin (experimental setting) to concentric with the "top/bottom" setting to "lines" (default) in Cura.