what is this ?...........................?

  http://www.horse.com/item/no- knot-picket ...

wondered what this was ...
It's for tying your horses onto a picket line when you need a way to secure them. I'm posting pics of horses being picketed on camping trips .......... ...........



http://www.american-flex.com/picket% 20us ...
Its for a picket line hobble kit, heres an article that might help you understand:)



http://www.outfitterssupply.com/russon/p ...
You put it on you tying line and then you don't need to knot your lead line to the picket roper - i have one attached to the steel ring I groom my horse on.
It appears to be a tea-bag suspended by a rope
i think its for a rope. i've never seen one tho
It's clearly a horse.

The clue is in the website name.