Mini-Turntable - "Schraubendreher"

This small turntable runs with a single AAA Battery. It does ca 5 revolutions per minute.

https://www.youtube.com/watch?v=vICn143UKjQ

The gearbox with motor comes pre-assembled from chinese vendors, available e.g. here:
https://www.gearbest.com/multi-rotor-parts/pp_350267.html or https://www.ebay.com/itm/LD02-Square-Geared-Motor-Model-Gearbox-Set-DIY-RC-Car-Parts/252682875117 or only a few USD.

The unit works reliably, but there is no perfections at that price. Some of the motors do not start by themselves. Some manual help (while battery is connected) may be needed to get it started.

Any object up to ca 200g that you want to draw attention to can be placed on the plate. -- The photos and video show a screw as an object. That is a silly play on words in german. Could not resist. Sorry.