I mean since you are just trying to get by until new notebook I say get cheap. I am no expert on this I bought one several years ago for $90? It looked nice I could take movies even pictures. My Asus has built in. It really seems like Web Cams are not pushing any technological envelopes so not thinking you can go wrong.
I went to NewEgg and clicked on them, then the interface, picked USB. They have a Logitech for $30? I say can't go wrong with that? I trust the brand. But they start at $10. 1.3MP seems to be the standard. Have a look, link
. Then if questions on a certain model we can discuss. And of course if someone has vast knowledge I hope they post.
But to be honest all you need is one that works and won't break 2 days later. Not a hard set of requirements. How much is missing a few bells and whistles going to destroy the user experience in such a short term stop gap situation as yours? Yea don't think a lot.
Best of luck.