You need some way to power the stuff you're going to build, so why not just get a multi-output charger that can run the Pinecil and also power your project and

You need some way to power the stuff you're going to build, so why not just get a multi-output charger that can run the Pinecil and also power your project and charge your phone? Now that USB-PD triggers, and ESP32 Arduinos with USB-C exist, I think it makes a lot of sense just to use them for almost everything.