I really enjoy the idea of putting stakes in the ground at 45 degree's, sharpened sticks jammed into the ground for zombies to get stuck on.
Then you can go up to them and finish them off.
You could have them break once in a while so you would have to replace them every so often.
It would be really cool to have them around your base.
You could use a knife on logs to carve stakes, then you would have to dig a hole and put them in the hole.