There are so many things that I am learning about bird safety around the house. My two budgies are not allowed out of the cage yet. They are my first birds, and I don't feel comfortable letting them out until I feel I can easily get them back in! They have just begun to eat from my hand many times a day, and I am repeating the same sweet phrase while they eat, so that it will be my 'call' when I want to gather them to my hand. I am feeling more comfortable with them every day, as they are with me. I expect sometime in the next month I will start to take them out of the cage and let them fly around the room. I have lots of mirrors, so those have to be covered or removed I hear. My ceilings are 16 feet high with sky lights, so I imagine they will gain the height! There is so much 'stuff' on my shelves and I am removing it all except for books, which I imagine they will chew on too! Some of the shelves are 10 feet high, and I feel they could easily make them their home and never come down. I am a constant worrier, and am afraid I will miss something that will injure them.
My friend had a conure who had free range in his bedroom, and ended up dead. He was asleep and rolled over on the poor bird! It was traumatic for him, and he hasn't gotten another bird since.
So that's my world right now. Just thought I'd share. I welcome any thoughts regarding letting the birds out of their cage for the first time, or any apparatus that would be helpful outside of the cage they may learn to prefer sitting on besides my book shelves. The shelves being so high will probably be more enticing than a standing perch of some sort. But maybe a perch with a food dish of goodies?
I have found that for the most part, birds will stay in an appealing bird area: one with perches, toys, food, etc. (They seem to much prefer eating chop and vegetables when they find it in a dish in "their" area than when I just put it in their cage. Romain lettuce is the exception. ) They usually come back down from high places on their own, but I would be prepared with some way of encouraging them. Fortunately, my highest places are either curtain rods (I can gently ruffle the curtains and they move) or low enough that my son can reach them on a chair even if I cannot.
Sounds like you are doing a good job being aware of things that may harm your birds. Don't get yourself too overly anxious about it because you can only do your best and there is no use making yourself sick over it.
I just bought a play stand for Cosmo because she will hang out with us in the family room for an hour or two each evening and sitting on us all the time can be boring for her I think. Here is the link to the one I got. It was very affordable and has good reviews.
Be careful of the skylights, birds are naturally attracted to what they sense as
open space which means that it is possible the birds will think that the skylight is open to the sky and fly right into it like they might do with any other window. I had 4 skylights in a house I used to live, I covered all of them with a sheer curtain held in place inside the skylight by tension rods and never had a problem.
Now you just need a ladder large enough to reach 16 feet.