not sure if it's the closest, but pair of jacks is 15 minutes away.... they have minnows, crickets and worms... some tackle too....

6600 Washington Rd, Appling, GA 30802

LW bait and tackle shop is a little closer, but they don't carry crickets or minnows.... i think it's just worms and maybe some catfish bait.

2058 Ashmore Barden Rd, Lincolnton, GA 30817