we made ours, and my budgies and tiels are on it all day long
we have a small swing hanging off of a part of it (came with a cage and we had an empty spot on the gym) and Goldie (one of cinnoman pearl tiels) loves to sit there and take it off and drop it, and wait for us to put it back on, turn our backs and bang shes already taken it back off
but my b/f fixed her she cant remove it any more but she can still play with it and she'll play with it for hours just lifting it up and leting it go
they have beads hanging off in different places and love playing with those too and 2 ladders and a big swing for them to sit on and a happy hut at the end of it but they'd rather sit on that and poop all over it then actually get in it LOL
we made ours for all of about $20.00
Heres a couple pictures of ours before it was used lol (and we've added a 2nd ladder since we made it)
Close up of the happy hut we made