Soon, when I have more time, I plan to draw something else on paper. and publish it. For now, here are a couple of examples...
https://steemit.com/gems/@olegm39/jean-pierre-barda-pen-drawing
https://steemit.com/art/@olegm39/gioconda-ballpoint-pen-drawing
In raster, on a computer, using a tablet:
https://www.deviantart.com/s-kerd/art/The-storm-begins-colored-821864887
https://www.deviantart.com/s-kerd/art/Uriel-1009497922
https://www.deviantart.com/s-kerd/art/Doom3-20-1090205869
https://www.deviantart.com/s-kerd/art/Doom-2020-1038643770
https://www.deviantart.com/s-kerd/art/WAVES-907736643
Vector, on a computer, using a tablet-mouse-keyboard:
https://www.deviantart.com/s-kerd/art/Slipgate-Scull-1156594346
https://www.deviantart.com/s-kerd/art/Aspiring-Rock-Guitarist-1047035219
https://www.deviantart.com/s-kerd/art/Baron-of-Hell-816524369
https://www.deviantart.com/s-kerd/art/The-calm-780133073
https://www.deviantart.com/s-kerd/art/Happy-Valentine-s-Day-1020617523
If your child makes digital drawings, I would recommend using a tablet with a pen - it makes your hand less tired and is more convenient than a mouse. A good option is Wacom Cintiq, but it is very expensive. I have Wacom Intuos 5.
Vector drawings, just like raster drawings, can be made using a tablet with a pen.
The keyboard is usually used for hotkeys. For example, to fill an area with color or to select an object hidden under another object... This greatly simplifies the process.