Demo video:
https://youtu.be/FRuVNpaCHM0

Build video:
https://youtu.be/JjG8f_8Vfeo

This is a walking four legged Star Wars Gonk droid or PLNK droid toy. It uses a 3V 30 RPM N20 dual shaft gear motor. It uses a boost converter to boost the 3V output from the 2 AAA batteries to 5 V. The toy would walk on 3V but it was borderline.

Parts required:

3V 30Rpm N20 dual output gear motor

2AAA battery box

10 ea 3MM X 12MM button head screws

DC-DC Step Up Power Module Output Voltage 5V DC to DC Boost Converter 1.5V 1.8V 2.5V 3V 3.3V 3.7V 4.2V to 5V Regulator Voltage Boost Converter Board 0.9-5V to 5V

https://www.amazon.com/dp/B08NCM9ZPQ?ref=ppx_yo2ov_dt_b_product_details&th=1

power switch:

https://usa.banggood.com/20pcs-SS12D00G3-2-Position-SPDT-1P2T-3-Pin-PCB-Panel-Mini-Vertical-Slide-Switch-p-1000847.html?cur_warehouse=CN&rmmds=search

https://www.amazon.com/Position-Breadboard-Electronic-Miniature-SlideSwitch/dp/B09R43HCY3/ref=psdc_306596011_t1_B07RTJDW27?th=1