I don't know, apparently this person lets their gliders play in them. I've heard of some people using silk vines or plants, as long as no was wire in them, if I'm not mistaking. It could be similar using silk flowers, just a thought.
It's hard to imagine anyone knowingly letting their gliders play with unsafe toys, is there a way to contact the maker of this toy and ask how the gliders do with the flowers and if need supervised play?
They do look so pretty! I may have some silk Gerbera Daisy heads left over from my wedding, wondering if they'e be safe to throw a couple or a few in the play box & see how they like them.
Let me know what you find out, k?