I take my hunting accessories (binoculars, chap stick, scents, knife, flashlight, license, ID, $20 bill, Hunters ed card (no wallet), toilet paper, sharpening kit, etc) on any hunt, gun or bow.
When bowhunting, I'll add a spare string, tab, and take every shootable arrow I own and spare points/pieces in a small tackle box. If I owned two bows, I'd take a spare bow as well.
When gun hunting, I take one rifle or two rifles if I'm far from home. I also take enough ammo to kill everything in the woods three times over.