LEGO Technic stuff useful IRL

These are some things I use these days that were built from Lego Technic. I hope you like them and that you'll find some useful.
0:03 Keyholder
rebrickable.co...
0:49 Camera stick with stabilization
rebrickable.co...
1:44 Motorized personal cooling fan
rebrickable.co...
3:35 Hand-powered personal cooling fan
rebrickable.co...
BuWizz components available here: buwizz.com/
Song: Trademark (Instrumental) by Eric Johnson
• Trademark (Instrumental)

[@steve.palmer]

You could upgrade the last one with a trigger mechanism like from the most recent plane

[@nikola_104]

I was actually thinking about it when building it, but I prefer this as it's much simpler, easily reversible and smaller.
This system would be preferred in bigger tabletop fans as you can transfer more torque from your hand to the gears.

[@hlieb0061]

I like the keyholder, it looks nice.