Honestly, this close to the awards banquet i wouldn't give him anything you can't verify, like, tommorrow, that he's done. You don't have time to play the guessing game with him, so call the parents and tell them you will be by at x time tommorrow to see thier documentation (ie anything that had to be written down, or a project completed). I sure wouldn't give him the one that requires a den discussion- you KNOW he didn't do that, and there's no way he will be able to do it.
Yes, it's a shame he won't get many awards, but IMO if mom cared that much about it, then maybe he should have been at some of the activities. Besides, if you give him all that stuff to keep mom happy (and the kid won't be nearly as upset as the parents, trust me), then what do you tell the other boys that worked thier little rears off for the stuff they got? You will lose more ground with them than you'll gain with scout #1.