All you need. Nothing you don't.
Your search – “house church unplugged” – did not match any documents. – Google search results.
I certainly don’t want to use a name or phrase already in use by another. That would be poor taste though it frequently happens even in Christian circles.
Unplugged has the idea of independence from the usual trappings of Christianity. Like any metaphor, unplugged has limitations. Of course we are plugged into God, the Source, and of course we are plugged into the brotherhood of all believers everywhere.