I retired from a large university after 30 years so I know EXACTLY what you're talking about. It's amazing to see these kids after they get out of class. 99.99% of them have their faces buried in their phones and are oblivious to what's going on around them! Every year, without fail, two or three of them would walk out into traffic and get hit by a car. It's like they never learned that lesson. That and how to dress themselves for bad weather. Shorts when it's 20f degrees out? Yeah, and don't bother zipping up that jacket either.
I don't miss any of that. What I do miss is how much more attractive the campus got when coeds dress for the warmer weather...
Good luck with your sale!