The "RoboGuts™ S.T.E.A.M. Education Program" is a perfect system for a home hobby side business. The hobbyist provides a "Maker Space" I like to call a "L'Robotoriuim Shop" http://LRobotorium.com/ in their garage or home with small desktop machines like 3D printers and old PCs to teach the "SCIENCE & TECHNOLOGY" manufacturing process from "ENGINEERING & MATH" 3D CAD design through basic electronic sensors, motors and other devices, to mechanical manipulations to "ART" phonemes to create speech and song using structured language programming/coding to part finishing and painting/coloring "ART" to finally "Theater ART" creating stories and videos with the little theater actors they have built themselves for about 10% the cost.
Tapper Sings "I Gotta Get Me Some" https://www.youtube.com/watch?v=ic9aR1kmu74
Phrase-A-Lator Development Kit Demo https://www.youtube.com/watch?v=4L8gMcj5qP8
The Saga of Watt and Hu https://www.youtube.com/watch?v=eMUtSZ19f8Y
X Project 00 miniFloppyBot RoboGuts™ https://www.youtube.com/watch?v=9fyjIib9qYA
X Project miniFloppyBot Assembly https://www.youtube.com/watch?v=ENKRraqeeog
How to Build a BillyBot https://youtu.be/ftSZ6SyzfHI
Tweaking the Software for the ZUMO https://www.youtube.com/watch?v=txduhNae_kY&t=340s