I was getting my windows tinted today, and as I watching the guys doing it, I noticed there are broken glass shards in my passenger side headlight housing. I know the bulb is good, but I think it's from the last time I changed the headlight bulb. How hard is it to take out the housing, or could I possibly take out the bulb and stick a vacuum in there?

 

Take out the bulb and use a shop-vac with a creatively made narrow nozzle to fit in the hole... that should do it.. a regular vaccum probably won't have enough suction to get the pieces out.

 

...and if that doesn't work then unmount your headlight housing and shake the glass remnants out.