Some interesting stuff from the Seed studio site
GrovePi+ a Raspberry Pi hat that breaks out connectors for grove contacts. I think grove is basically a standard where you get power in conjunction with every pin on the development board. So it could be digital, analog and so on.
0.5 Inch OLED display Arduino shield for the Arduino micro form factor
Base Shield V2 A shield hat breaks out connectors for grove contacts. I think grove is basically a standard where you get power in conjunction with every pin on inthis case an Arduino or Arduino compatible. So it could be digital, analog and so on.
Screw Shield sturdier connections