I'll jump in: I was stuck in layover many years ago and bought a Topo Designs backpack -- Google says it's a 30L Apex Global travel bag.

I use it every week, it shows no signs of degradation over approximately a decade. Huge beefy zippers, tons of pockets and organization for those who are into that.

I paid like $200, but seems like they're cheaper now. Hopefully not because of the reasons in the article. At the time, I believe they were a small company from the state my layover was in--maybe Colorado.