Two crafters one keyboard:
One seen with Minecraft is that collaboration with among siblings or friends happens mostly from two different terminals and yelling across the room.
I broke out the LittleBit with two brothers before I told em there was a Minecraft tie-in. They discovered a lot of possibilities and wanted to make a dinner bell.
Once I showed the Minecraft tie-in they were immediately distracted from the bit. With since guidance, they continued adding red stones and kept my Minecraft cloudbit working.
Then they started working together. One would use the button to open the door for the other using the littlebits. I would imagine a Minecraft challenge that require two people could be fun. Or a dinner bell that makes playing Minecraft harder, night, or monster ridden