Hiding and Finding

Where do they go? The tiny bouncing ball, no doubt, has bounced into oblivion, and easy to see how, but the penguin? Where does a 5 inch stuffed penguin disappear to? It's not like we live in a mansion with 8 bedrooms and maids' quarters and vast walled grounds -- you can almost vacuum the entire house from one outlet! I feel like I spend half my day looking for miscellaneous small toddler toys, and the rest of the day looking for the darn penguin.