Where can I get phone flashers? (they blink when your cell rings)

I had a cheap phone flasher that I got off ebay, and when its battery died, I dissected the turtle and pulled its blinky guts out. Anyway, it works great for one of my projects, and I want to buy more, but can't find them anywhere. I bought several others off ebay, including more turtles, but they all had different blinkers inside them, which sadly do not work for me. I'm attaching a picture of the part I want. Anybody know where I can get these?

Picture of Where can I get phone flashers?  (they blink when your cell rings)
phoneflashers.jpg