A bike rally a few months back provided us with a handkerchief as part of the ride registration process. It came in handy when we rode through some light showers during the ride and stopped to cover up what the half helmet doesn't.
I've seen these skull masks online a few times, but never saw someone riding with it in person. So when I saw it for $11 on Amazon, I jumped on it. It smells a little, but I'm thinking that it will come out after washing it a time or two. The difference is night and day though. I almost find myself smiling behind it because I know that I won't have a mouth full of bugs and debris. And after getting caught in the rain twice already with it, it really helps cut down on the pain.

Available from Amazon here -
http://www.amazon.com/Schampa-Lightweight-Skull-Face-VNG008/dp/B001AWLTX4/It's velcro in the back, which a bunch of people complained about. Personally, I think it works great. I suppose having it where you could tie it tight would be a perk in some cases, as I have felt it get loose after 100+ mile ride, but I simply unvelcro it and put it back on tighter.
I've yet to have someone comment on it when I stop... but it makes me curious what people think when they pass me riding with it.