You've moved on to USB-C because you're ahead of the game and dream of a universal universe, but you still have lots of micro-USB devices to connect and power. Rather than buying separate cables and power supplies, why not grab one of these adapters?
The rear of this adapter has a female USB-C port for connecting your USB-C cables to, whilst the front has a male Micro-USB port for connecting/powering your micro-USB device. Handy for using your Raspberry Pi 4 USB-C power supply with your Raspberry Pi Zero.
If you want something that goes the other way, we have micro-USB to USB-C adapters in the store too.