here, just get a few of these LED lights. I don't know about brand, seems there's a lot of options. But, just stick em on a piece of styrofoam or something, spray paint the styrofoam with a glow in the dark spray paint and anchor it to the top of your flagpole.

edit- also, if you wrap your flagpole when its collapsed with foam tape, no one will bother. + it'll be more comfy to hold. Just don't walk through security with a blatant metal stick.