With the new Lighting Rules in place, you may want to consider picking up a battery-powered glowstick if you cast any light spells.
With Halloween on the way, a lot of Halloween stores will be carrying them for kids to be safe / visible at night, such as these:
www.lifegearcompany.com/glowsticks.html
If you happen to be hitting up a store for any costume stuff, grab one while you can!