Parrots are naturally inquisitive, always be sure to check that Quick Links are always secured tightly to the cages. Some folks like to utilize leather strips and cotton rope to affix toys to cages and playstands. With my flock, I am in the habit of attaching toys half in and outside the cage. Brass and some quick links contain zinc. Be sure to ask for stainless steel to ensure they are bird-safe.
Chains come in various sizes and metals.
Same as quick links. They come in various sizes. Always buy the right size for your bird. Too large or too small can be harmful. Be wary of chains made of brass or zinc.