If you’re using cheap filament, also consider cranking up the infill percentage. I recently printed something for a friend that is almost a 15cm diameter sphere at something like 85% infill. Every time I hold it I’m surprised by how heavy it is. I haven’t tried it, but I think many slicers will let you change the infill percentage after reaching a particular layer, so you can make something bottom-heavy to prevent it from tipping over.

The instructions in the link say that you need to configure your slicer to execute one of the two options of scripts described, before layer change