Help me find a scooter!

So I’ll be using it mainly for college. Military gave me back problems so this will help with walking around this huge campus. I’m looking for something that is pretty compact and lightweight so I can carry it with me because I don’t wanna lock it up outside. I know this may seem out of reach but I have a thought of somehow strapping it to my backpack and bring able to walk around inside with it like that. Basically whatever can get me as close as possible to that. Thanks!