Note - if 3d printing isn't your jam, you can also do things like generate game assets. Ex - take the output mesh and throw it into something like https://www.mixamo.com/#/ for auto rigging.
Again - the open source tooling is a bit fiddly, but it's workable (you'll need to be familiar with python packaging to get the 3d pack up and running in comfyui). Quality of the meshes will vary a lot based on input.