I wanted a smallish compost bin to keep on my kitchen counter, so I designed this lid to fit in a dollar store 9.5qt bucket. I added a rim so I can later add charcoal onto it if it ever gets too stinky, but I've also included an stl without the rim if you don't care.

If you print it, make sure to measure the diameter of your bucket and resize as needed. (I didn't so I had to sand mine down to fit, oops. I've since resized the stl so it should just fit a Dollar Tree bucket. ymmv)

It might print out okay without supports depending on your settings and printer. My handle was a little bit ugly without supports, but still functional.