Crossbow
Badges were used by medieval pilgrims as souvenirs from the holy places which they had attended, as tangible proves of attendance such a holy place. Each place of cult had it's own badges so seeing a pilgrim wearing certain badges one could name the places which this pilgrim had visited. Also, so called secular badges existed which could belong to an authority or a noble who gave these badges to his/her courtiers, srevants, supporters and so on. Badges commemorating a major event existed, too.