A freezer, either a chest freezer, or an upright, so you can buy and store meat in bulk and shop sales, have more room for hunted meats etc. You don't have to buy them new, we bought both of our small chest freezers (5 and 7 cubic ft) off of Craigslist for under 100.00 total and they both have been working great.
Cleaning products can be another important tool/part of raw feeding. I usually use Seventh generation disinfectant spray, or vinegar/baking soda. I've read of others that use GSE (grapefruit extract), or other natural cleaners. Obviously if you feel comfortable using bleach or other commercial chemical cleaners, it's certainly an option. I do wash their dog bowls in the dishwasher to sanitize them, along with any other dishes, knives, cutting boards etc.
One of my favorite cleaning tools is the Lysol hands free soap dispenser (7.00). It's so nice when your hands are gooky, just to stick them under the sensor for soap.