"OK. I've bred cockatiels in these and they are just perfect for that purpose. Cockatiels are not concerned about the finer details of their nest boxes - only if it's the right size with the right size hole. This certainly will have your cockatiels multiplying in no time if you place it in a large cage or attach it to the outside of a smaller cage. (And if you have a pair of opposite gender cockatiels...)
BUT...what if you have a single little parakeet? This is the beginning of the world's best toy chest, folks. I have many birds but only one little parakeet who is very tame and loves to spread out on the bed and play like there's no tomorrow. Only problem - my husband isn't crazy about piles of Budgie toys all over the bedroom. SO...I bought this box and I have to admit that I sanded it and painted the outside with lots of bright colors. I attached some screw eyes on the sides to attach "shredder" toys and even put a little play gym on the top. My budgie LOVES to get inside of this box during play time - in and out and in and out and in and out...you get the idea. When we're through playing, I put all the assorted balls and bells and "foot toys" inside the box and it's very tidy. Sometimes Liza (my Budgie) even like to unload the box herself - I just put the box on the bed and she goes in and picks a toy and pitches it out the door - over and over until it's the way she wants it. I can't imagine a cheaper or more perfect toy box for my Budgie!
I thought of putting a handle on it, sort of like a purse, but I figured that would get chewed through in a hurry so I left it off. If you travel with a small bird, a handle would be helpful...just screw a latigo leather strap to either side and away you go.
I know this is not the intended purpose for this Item, but I wanted to share the use I've found it perfectly suited for."