My suggestion is that when the house is empty, collectibles don't appear. My sister just had a rare collectible, an uncommon collectible and two common collectibles with no one to pick it up. There was the cat... hey! How about letting the pets pick up collectibles! Also, if the house is empty, there shouldn't be emails (who are you sending the email to, anyway?). And where do all the socks come from while the house is empty? The cat? xD Just some suggestions.