There was a Summer Olympics tournament at my son's Kindergarten two years ago. This is what I designed as a medal for every child that participated. I added a little hole at the center top where the ribbon was attached.
Gather your materials and laser equipment. Consider how large you want the medal to be. My medal - as shown - is 60mm in diameter. Change the year to the appropriate one. Add a little hole in the top center at the size of your liking and … FIRE THE LASER!