Grandma won a twin-pack of these at a church function and gave them to
me.

http://tinyurl.com/magnetled

They have 3 ways of being mounted: screws, double stick tape and a
small magnet built into the base.

I was thinking of slapping one on the bottom of my electrical meter
housing just to see how well it will light up the walkway as I round
the corner of my house.

Does anybody see any issues with having a small magnet in such close
proximity to the meter?