painters bucket and kitty litter, keep a short shovel on your truck
Best stuff around for absorbing a spill or eliminating a possible spill. Sand from the local hardware store is just as good too. Also there are some pads (not diapers) out there you can buy by the box but they cost about $30.00 to $50.00 per box. Just get a bunch of people to go in on the box and split them up. The pads are easier to carry than kitty liter, I'd still have some kitty liter handy but the pads can be quickly thrown under a leaky mess.
http://www.dawginc.com/spill-control-absorbents/oil-pads.php
