Thor's Pet, get down on your hands and knees and crawl around your apartment, thinking like a puppy.
You'll find all sorts of things that as Human, you just look past and don't notice, but as Puppy you will find irresistible!
It's a great way to puppy-proof your house. Look for cords, draws on blinds within his reach, small objects he could potentially swallow, identify furniture you may want to treat with bitter apple... Things like that. The dangerous stuff is the most important--toxic plants, electric cords, etc.--but you'll want to puppy-proof the things that he might damage with no harm to himself, but with aggravation to you (like the xbox cord).
At least he's a small lil guy, so if you do end up having to crate him, you can find one big enough to allow him some play room in it. We crated all our pups when they were young...until they were about 2 years of age...if we were going to be gone for extended periods, and they just considered crate time as nap time.