Here's a simple Halloween costume that would also make it easier for drivers to see your kid.  It's pretty funny too.  It's the  STICK FIGURE costume.

 

This made me smile.....

 

 

 

Basically, this kid's awesome parents bought some L.E.D. wire that lights up, then put a circle of it around the kid's face . . . a line down his chest . . . a line down each arm . . . and one down each leg.   The result? Safety and Hilarity.