This lady took an old Ikea cabinet and made it into a cage but I would not recommend it. For one thing, it's too small and she has exposed wood on it [that would not last very long with my birds] and, for another, she used regular metal wire mesh -meaning, not stainless steel or anodized aluminum - and, last but not least, the entire bottom of it is nothing but more to clean because I doubt the birds use it. But there is a picture of a nest they started building in it which is very cute!
http://www.ikeahackers.net/2017/08/ikea ... rrots.html