Yes, the empty chip packet is one of those 'interesting' things. I haven't deleted any of mine to date yet either. I'd feel bad about it. I can just imagine my dogs being excited and proud of finding something, and I don't want to take it away from them. I did, however, notice that they can be gifted. Piles of rubbish, however, cannot, so not everything can be gifted. Nor can career items, like portfolios. It can be advantageous to find out a sim's traits by giving them a gift that is related to it. Giving produce works for green thumbs, loves the outdoors, hates the outdoors, natural cooks...