A few more options for spill kits.
Ramsorb kits through eBasicPower:
I bought a basic spill kit instead of the drip mat, mostly because renewing a drip mat is a lot more than replacing a few $1 mats (about $50 for a new center pillow). Not to mention I wasn't sure how much space and weight a mat might be. Although they do look very handy for trail repairs.