An olive branch
(The winner of an Olympic event was awarded an olive branch, and was often received with much honour throughout Greece and especially in his home town, where he was often granted large sums of money (in Athens, 500 drachma, a small fortune)).
A discus (The discus was a circle shaped stone, iron, bronze, or lead. There were different sizes according to age groups. The javelin was a long wooden stick shape with spear head, similar height to that of a person. In the middle was bound a thong for a hurler's fingers to grip and guide to the correct angle it was thrown.)
http://upload.wikimedia.org/wikipedia/commons/5/53/Ancient_discus_dedicated_to_zeus.jpg