Update Nov. 11 2023 - I have added a taller version to add even more weight.

I really love the model that Robin created but my cat kept knocking it over with her tail so I needed a heavier base.

You don't have to reprint the stand, you can just print this base and attach it. It attaches by itself or you can glue it.

I'm thinking I might try printing it in tpu or a flex pla as to add some weight and some grip.

I printed it in the same pla as the stand at 0.2 layer height and 25% infill but you can increase to add more weight.