My mother used to take me to flea markets in my stroller and I would just rummage through the piles. You've got to dig through the overstuffed racks that everyone else just walks by. It's the only way to find the cool stuff.
I remember my wife and I used to get on plane and see everybody else with their babies. They'd be putting strollers and car seats up above and we'd think: Oh please Lord don't make us go through that.
When a place gets crowded enough to require ID's social collapse is not far away. It is time to go elsewhere. The best thing about space travel is that it made it possible to go elsewhere.