If something appears perfectly safe to you, your bird may soon show you that it's not. In our opinion, plastic in toys should be avoided completely. Birds' toes or toenails can get caught in them. This can result in broken toes, feet, legs and nails.
Birds pull apart the single strands of pieces of rope or string.
When the strings get caught around legs, toes, necks, or any other part of the bird, the bird will likely flap wildly to try to get out of it, which of course causes the string to wrap even more tightly. The result can be lost limbs or death. We know of one Amazon who ate a piece of string, which caused her vent area to prolapse, and since she was also carrying an egg, she wasn't able to pass it, and she died. We don't recommend toys made solely or mostly of rope because it's too easy for a bird to get toes, etc. caught in them. Long toenails are particularly prone to getting caught in rope.