We have found bone tools, but they are very small points probably used for aspects of working with skins/leather. The only 'weapons' we have found are arrowheads which were made out of stone and used for hunting. No shields- bone would not be good for that.

Generally when people are 'feasting' on food like animal, you find burnt scraps of bones which are really obvious as they often have butchering marks on it. We have some Neolithic houses and they are chock full of bone fragments from peoples dinner.