I've owned, used, seen, messed around with all kinds of high end backpacks. And so one day, when I was on Amazon, I saw an add for their Amazon Basics Classic Backpack. It was $18. I've never bought a backpack that retailed for under $20, so I figured I'd see what makes all the high end packs on the market that much better.
Well, this actually exceeded my expectations. It's not huge, but it's not tiny. It's got more pockets, and admin, and features than I would've guessed, and it feels relatively well made. For ordinary daily use, this wouldn't be a bad pack. That being said, I have LOTS of backpacks, and don't need it. So... for $10 plus shipping, it's yours.