Thanks for putting up the photos, her main aviary is much better looking than I thought it would be from Gillys description, when you consider the amount of time you had to do all this in. Looks good, and a great position for her with the window to look out of and a place to take refuge. It shows people how you can make a really good home out of bits and pieces. Hope the soil pipe wasn't secondhand

I use the same size soil pipe between two room about four meters long. Wall cut out with a borrowed core drill, it's been like the M4 for them as they run between aviaries. I think in time you may have to change the shelf in the main aviary to a laminated shelf, as the plain wood or ply one just becomes too difficult to keep clean.
Can't see a nest box for her, no need to make ones like Gilly's notorious luxury swiss chalets, even a card board box with a hole in it about shoe box size will do fine. I'm a big fan of cardboard tubes about the size used for posters, keep an eye out for any. Chippies love shelves and old towels BTW, oh and you being around with her all day.
Lastly, go on get her a Wodent wheel for Christmas you know you want to. Might drive you mad when she gets the hang of it though.