First of all, you can get a perfectly good bat at the Thrift Store for less than $5.00. It'll be totally scratched up aluminum bat. But, any bat you bash zombies with is going to get just a tad scratched up.
Once you've got your basic weapon, you can get the rest of your supplies at the dollar store. Seriously, they've got a lot of the basic, food, water, and medical supplies that you'll need for The End of The World As We Know It (TEOTWAWKI).
|By Pete (http://www.flickr.com/photos/doviende/38016238/) [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons|