Gearboxes are always amazing. You can lift tons of loads with them. In this video i made a 3d printed gearbox and showed advantages of them and for that i used 3d printed PLA herringbone gears.
Finally that little dc motor lifts 58kg/128 lb at 125:1 gear ratio(reduction).

STL: https://www.thingiverse.com/thing:492...
Source Files: https://www.cgtrader.com/3d-print-mod...

https://www.freeiconspng.com