Pinbetween gives you access to all of the micro:bit's pins at the same time as using an edge-connector add-on, and it's completely solderless!
The 40-pin male header on Pinbetween lets you use jumper jerky to connect extra bits to your micro:bit while using an edge-connector add-on like the enviro:bit, for example.
Plug your micro:bit into the edge-connector at the top, attach your micro:bit add-on at the bottom, and then use the handily grouped and labelled pins in-between for whatever you wish!
Note: micro:bit, enviro:bit, breadboard, etc. pictured are not included!