Here is where I collect links to various bits. Some I can recommend, some are just interesting (see the notes for each). I will try to collect as many things here as possible for the curious mind!
DFRobot Products
UNIHIKER - IoT Python Single Board Computer with Touchscreen
Self-powered Wireless Switch (433Mhz)
Digital Wireless Receive Switch (433MHz)
IceWhale Technology Products
Zimablade Website
Zimablade CrowdSupply Campaign
Various Components
USB Hub 1-to-2 PCB
Geeek Pi 3-Wire Controllable Fan
Input Devices
Kiwitata Wireless NES-Style Controllers