These people are screwed. They're almost completely incapable of planning ahead. Why haven't they hit the local Redi-Mix plant and reinforced the fences? Why haven't they emulated Morgan's and the governor's traps, so the zombies practically kill themselves?
Also, either Rick or Tyrese have to die. The show doesn't need two crybabies.
While they're picking up a few pallets of cinder blocks at Lowes, they should grab some paint. The prison is grim enough without having to put up with institutional grey.
I'm headed to whatever part of Tulsa you're at when the walkers hit.