At the very least, be watchful as you go about your day. There will be lots of creatures and characters out and about tonight. They may not be as careful as they could be and accidents are bound to happen. By being alert and attentive we can make this a safe and happy event for them and all involved.
I leave you with an embarassing, but fun picture of me as the Mad Hatter from 2 years ago. It's a homemade top hat and just some wacky clothes I found. :)