LEGO MOC EV3 Useless box by Artem 16 | Rebrickable - Build with LEGO
Tutorial: Most Useless Machine EV3R – Robotsquare
LEGO Technic useless machine - Lego Technique
Useless machine for Lego WeDo 2.0 45300 instruction (Build Wedo Robots — a series of instructions for assembling robots with wedo 45300 Book 24) - Kindle edition by Evdokein, Vladimir, Gergert, Vyacheslav. Children Kindle eBooks @ Amazon.com.
20 Mechanical Principles combined in a Useless LEGO Machine | The Kid Should See This