These are pretty cool, kinds of things I sometimes did in my pond, only they never went anywhere, and usually weren’t as structurally sound as those look.
The whole premise is you take natural things and make a boat out of them, then put that into a stream, or pond, and take a picture of your (hopefully) floating contraption. Then go have a picnic with some other like minded individuals. Or at least that was the plan, way back in July in Canada. Not a bad idea, hopefully they’ll do something like that again next year.
Here are 2 of my favorite boats:
The feather one:
And the flower mast one.