Bottle cap tripod

Overheard: "That would be a fun shot. Too bad I didn't bring my tripod."
"Oh, you need a tripod? I have one right here. Do you have a water bottle?"

Seriously. A little piece of plastic that retails for $10 at You snap it on top of a water bottle (which let's face it, we are still carrying when we travel) and voila! Instant tripod. So kewl!!!