I'm currently teaching my kids the basics of 3D modelling and Tinkercad is a great resource for that. The one thing the younger ones struggle with is the fine motor skills and accuracy required to manipulate objects.
It would be great if there was an accessibility option to increase the size of the on-screen elements that deal with translation, scale and rotation. They could be 10 times as big and would still look great.
It's not just kids that would benefit from this - it would be laptop users using notoriously difficult trackpads too.