I use a lot of rubber bands. On my razors always. Great on water bottles - not just for grip but also so I know which one is mine. I sometimes use them on pens, if the pen is too skinny.

Also keep a phone with me all the time and a mini air horn by the bed. In case none of my family is close to the phone - out in the garage, in the basement, etc - and I'm in a bad way. I guess you get those at sports events.