One of the things you always need is a battery spill kit: baking soda, waterproof rubber gloves, and a large Rubbermaid container. Tell everyone where it is, too
Other things that the judges like to see/hear is: information on your safety practices and safety glasses available for team members.
Some of the things other teams do that my team is looking to start doing is a pit safety qualification of some sort. Basically you have a safety qualification team members have to meet for them to get into the pits. Not only does it limit crowding and keeps safety hazards down, but it also keeps the pits cleaner not having so many people in the pit. Additionally, have a first-aid kit out in the open and make sure everyone knows where it is located.
This is a thread I posted. I hope it helps out a little.
http://www.chiefdelphi.com/forums/sh...Safety+Captain