Review (5/5): They're Actually a Great Parrot Toy
I know this isn't what they're marketed for, but my cockatiel loves playing with, and chewing on hair ties. She also really loves bright colors, so these are perfect.
If anyone does let their bird play with these, please only allow them to when you're supervising them. Better yet, when they're spending time with you out of their cage...just to be safe. I never give these to my bird unless I'm right next to her when she's out of her cage. I've let her play with hair ties since I got her though, and they are her favorite toys. She does have favorite colors too...The blue, pink, and green ones are her favorite. I let her choose the one she wants, and 95% of the time those are the colors she chooses lol.
Before I found these, she played with the larger hair ties. She still likes those, but I think these are more comfortable for her to pick up and chew with her little beak.