I've found out there is a genre of Sun-glass -accidents:
1. Leaving glasses on for too long and getting panda-tans or nose-burns
2. Mislaying of glasses that causes either a headache or an economical loss, or both
3. Breakage of glasses by sitting on them, walking on them or running over them by a car or a lorry
Chickenbone necklace design also by Petra.