The Ultimate Everyday Carry Camera Bag: Atlas One
If you travel with camera gear even a few times a year, you already know the problem. Sometimes you're heading to a wedding with a full kit and your clothes are checked. Sometimes it's a weekend trip where you need a few lenses and room for a change of clothes. And sometimes you don't need any camera gear at all and you just want a normal bag. The issue is that most bags are built for one of those scenarios, not all of them. So you end up owning three or four bags and playing a guessing game before every trip.
The Atlas One is the first bag I've used that actually solves this.