Awww.. your middle of the night post made me want to hug you! Here's a link the stuffed animal:
http://www.snugglepuppys.com/order.html
You might be able to get them cheaper on ebay.
Tell your roommates to bug off! LOL. I wouldn't worry about them too much. It's not like they're going to kick you out. Just be apologetic. And 8 weeks is still REALLY young so Mochi is going to have to take some time to get used to your rules. He also can't hold his bladder all night, so he's going to wake you up for potty for a few more months. Even though Howie knows how/where to potty in the middle of the night he still likes to wake me up so he can get a treat. LOL.