This photo reminds me of that nervous feeling when learning to swim of getting in the water by yourself for the first time. I'm not sure if my confidence level would be helped much by having pop bottles strapped to my back, but it's an interesting homemade version of the floaties many of us grew up using.

Mohanned Faisal/Reuters
A boy with empty plastic bottles attached to his back stands on the bank of a water used to irrigate a farm in the villageof Falluja, 30 miles west of Baghdad August 20, 2007. The boy used the empty bottles to help him float.