I use these ones that are one piece so there is no way to break or snap them (and have used them for years with my own girls and for sale). The ones at the $1 Tree are *exactly* the same as the goody ones. I've had several customers re-order so I'm assuming they are pleased. I get them at Wal-mart, Target or $1 Tree.
Belle is another brand & they call their's Pony Sox (don't remember where it's from) but it's 30 plain black.
These are some of my pony-o streamers on these type of pony-o's. I just looked at that "Power Bows" link & they seem to be the same.