Here is my response to you for the same message you sent me...
My friend's conure is in the vet's office right now because he got hung up in a quick link that was closed. Anything put in a parrot's cage can cause injury if they try hard enough, there is no such thing as a totally 'safe' bird toy.
I can understand you don't like the C rings... I have seen injuries with being involved with a parrot rescue due to quick links and metal / plastic chains used in toys. I don't like quick links... I don't like chains...
I appreciate your worry, feel free to post, but every single toy can be picked apart. Even the photo showing a toy hanging in the background has a twine loop that is large enough for a tiny head foot or leg to get caught in... The wood plank perches, small birds have gotten toes caught between the wood and the bars of the cage. The list goes on and on... and don't get me started on how dangerous rope perches are. Many many many more birds have been injured and died because of rope perches.... everything we put into our bird's cages is about supervision and monitoring. If you have a bird that puts their heads into everything, I would recommend zip tying their toys directly to the top of the cage, so there is no link whatsoever of any kind. If you have a bird that picks at strings or such, I would recommend removing all rope perches or cloth toys, even the preeners that are made with non pull fabric.
I appreciate your concern, but as much as you find fault with a plastic C link, I find as much fault with a quick link or having a loop of string as you earlier suggested...
Jen