Almost every single wardec I ever received on my boxed characters were when I went ice mining for tests.
Ice is pretty awful isk per hour and takes a surprisingly amount of interaction when doing it en mass. Taking 2-3 characters out to do level 4s took about as much effort as running all 12 in an ice field and the level 4s made more isk per hour (especially if you have competition for ice).
EDIT : Your mileage may vary as my characters were optimized for running missions and I had an optimized setup for the LP and the missions themselves.
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