@terri I pointed her towards some cheap and cheerful spiral ones on Amazon as a starting place. Her desire to buy was based on child expressing a desire for them, so who knows what she's up to exactly. :D
And yeah, I figured if one did make markers for tatting, they would need to be super lightweight and opening.
@Raeyn
I never have used stitch markers for tatting. The pattern itself usually works as a marker.
But if you really want to mark something, I would prefer open markers, too.
(and would probably use a paperclip but that's another story...)