NEVER use galvanized metal as it can result in zing poisoning.
NEVER use fence wire for making toys etc.
The following plants and trees should be safe for parrots and can be used for perches or decoration in your home or the aviary.
However, consider keeping new plants isolated for a few months and rinse the foliage in case of pesticide residue.
These are NOT bird-safe:
* Weeping Fig
** Red Maple
*** Chestnut, Oak nut