Shared by hn3000 on Thingiverse:
A simple holder for two batteries and a Raspberry Pi Pico (held in by friction).
The Raspberry Pi Pico can run with 1.8V or more (up to 5.5V), meaning two AA batteries or rechargeables are enough. Make sure to remove at least one of the batteries before connecting the Pico to your computer (or if you know how, use a diode to prevent the batteries from being connected to the power provided by the USB connection).
The batteries can be connected using some wire, I melted the end of the wire into the end of the tab holding the battery. Both cells are supposed to point the same way, you can wire them in series using the provided holes. The photos show one way to do it.
Download the files and learn more
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!