A mind miner is always busy. Whether they're out fishing for ideas in the pools of our collective unconscious, or digging deep within our own subconsciousness, or flying kites during brainstorms, no matter the methods or the means, or wherever the faintest ideas are, they are there, somehow, always bringing them back home..
It's a pretty fun thing to do and a nice way to warm up the mind before drawing. Perhaps you could even draw from the finished results as a warm up exercise too.