I haven't tried more, my hands don't move THAT fast, but I do drag 2 kids (no need to pause, but some times all those rambunctious kids want to do is run, run, run) close to an item (mushrooms uncluded) and them drop them one right after another onto item. Then they both get the item and deliver it. Awesome when finding rare items, cause you get lots of tech points, and when you find the items the first time because you ge one credit for new item but then you get tech points for the second one!
Love this game!

GOOD LUCK ALL Y'ALL! ;\)