Hmm, they wouldn’t be a fan of most of those options. Closed fist gives the human all the control over the situation, and two fingers feels a lot like dangling over a cliff. Three fingers might help a little, but it’s still only one slight tightening of those fingers before there’s a snapped rib. 

If there wasn’t time for a palm, it would be safest to just sweep them off the ground into a cupped hand.

I’m pretty skittish, so I’d probably freeze right up if I saw them in my house. Dean would be dragging Sam out as fast as he can, ushering his little brother into the walls. I’m sure they’d have Jacob close by, so I’d have to keep an eye out for really tall lurkers wearing hoodies who are trying to be sneaky (Dean’s making him work on that).