The highly educational videos of PhilipStephens007.
(*) = those I imagine can level up beginners the fastest. 

Strip cutter for minitures (*) 
https://youtu.be/bWo2BRLHY_g

Foot operated scroll saw (*)
https://youtu.be/LmEHuTgtcvw

Mini wood lathe (*)
https://youtu.be/lTHw15Hsj3U

Small wooden pinions
https://youtu.be/Wi-XdpYJ8QM

Sharpening jig
https://youtu.be/T0jenO_Lx0A

Wefting loom
https://youtu.be/4jZ3NMEo3bs

Drilling holes tip (*)
https://youtu.be/IuYaC43ElNE

Wooden balls
https://youtu.be/G5x9EYvndsw

Wooden balls take 2
https://youtu.be/jM2JqJw_9TI

Small clamps (*)
https://youtu.be/9VRKa_jQflI

PVC bulldog clips
https://youtu.be/wSJUYvgPH4g

Pattern symmetry and resizing
https://youtu.be/2DjOYgknCwE

Fringe loom
https://youtu.be/8VGCJHssfBI

Wooden pulley (*)
https://youtu.be/xF-1dMoR-Pk

Emergency compass
https://youtu.be/lBE5quzXiTo

Re-inventing the wheel and electricity (*)
(playlist)
https://youtube.com/playlist?list=PLVrqtxun7EUkJ5U40klw_ff7I4nUjnEg9

Reusing chipboard (*)
https://youtu.be/ONf_y2S2Qz0

Pump drill
https://youtu.be/veGukUgUTtc

Conserving cables
https://youtu.be/IWphpaa1sc0

Plumbing with a broomstick
https://youtu.be/zo6OasPWmU0

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This work is hereby in the public domain.
Do what you want with it.