I really liked The Smurf by Anthonylu (https://www.thingiverse.com/thing:1549453) My sister in-law always calls my brothers Handy Smurf. So I thought it would make a great Christmas present.
I used real nails for the nail he is holding in his mouth, for the pencil and the tip of the screw driver because I didn't like the outcome of the printed version.
Overview and Background
Lesson Plan and Activity