Hello! I'm finally here to update. The cage had changed a while a go already, but I didn't have the time yet to take and post pictured because university started. Here is the current set-up (which they seem to love):
This is how it is when opened:
Detail of one of the new perches I made myself, the cage has 2 of these:
This one is usually with me on the table, not on my desk where it is in the picture. Jimmy's favourite spot, since it is close to me usually.
Perch 1 in my room:
This one is high up and they hesitate to go there still. I'm working on showing them it is a safe spot.
Perch 2 in my room:
This one is on one of my cupboards, they occasionally go there to see what I'm doing in the kitchen.
Perch 3 in my room:
A little swing close to the window, for now this is too scary for them, but I'm also working on this.
Where the cage is, since that also slightly changed:
They seem to prefer it here, I guess it's because my main chair for relaxing is closer to this side of the desk, they always come to the side of the cage where I am, chatting to me.
This is the cage when it is closed:
They had 2 swings in the top at first, but they couldn't settle with that. They kept making a fuss about who got to sit where. When Jimmy would be on one, Kimmy HAD to sit there, and vice versa. I figured it would settle in eventually, but after a week things only seemed to get worse, so I made one big swing for them. They now don't fight over it anymore and even sleep together on it. They settled over it in less than 2 days.
I'm currently working on a way to hang that big swing somewhere in my room to for when they are out. The little balls made of strings of wood are by far the favorite toy, that's why I put one in pretty much every spot for them in the room.
I added a mineral stone as well (which I knew I had to get by the way, before it was told here) and it has been a success, they both often have pink faces from chewing on it. I replaced the sand on the bottom with toiletpaper, which I change every day. I initially had this, but a breeder told me to get sand, since they need the minerals from that. I now see that this isn't true, and that it can even be dangerous.
What are the thoughts on this now?
P.S. bonus picture of Jimmy and Kimmy with pink faces from the mineral cube:
(the red spot on Jimmy's foot is because he ran through a drop of hairdye that I hadn't seen when I cleaned the mess, I got rid of the dye so he wouldn't ingest it, but it stained the skin)