Sick, never heard of Tinkercad, I'll check it out now.
I use polymer clay to sculpt aliens/ creatures from the stories I write, so I can have a physical thing to look at while describing them, which has helped. But, more complex mechanical stuff can't really look good with clay so I tend to use rubbish - well interesting-looking rubbish - to make ships and stuff. I do want to go more into digital modeling. My friend has been teaching me blender, which has been good to ask questions and wrap my head around it.