Reddit reviews Prevue Pet Products BPV00363 12-3/4-Inch Wire Patio Sundeck Bird Play Pen, Large

Can you sew? I have a couple of these large sundecks for birds which I sewed covers for and my rats love them. A couple (or more) layers of fleece makes it safe and cozy.

Also everyone loves Lava Ledges, and I guess I sort of do too since I have like 20 of them, but lately the quality seems worse as they keep coming stripped which makes them spin on the screw which is not safe. I have returned one but also repaired a couple with glue, which hopefully is okay. My rats don't chew them all the way to the screw but it is a porous material so the glue might move further out than the screw hole. Also, Lava Ledges are much smaller than the perch I mentioned above, but rats still love to chill on them, so I thought it was worth mentioning.

Excuse the rambling, I'm high on coffee. :P Hope this helps a bit!

I sometimes like to use bird shelves, you can find them on amazon. bird shelf
I put a piece of cardboard on it so their feet don’t fall through. Also just looking up supplies for birds in general, you can find a lot of good stuff .

I use the same thing and just hang normal toys. I actually have the same cage as you, and I have one one the left side about 1/3 from the bottom and then I have another about halfway up on the opposite side that I place a bunch of foraging stuff on periodically. Haven't had any trouble with weight.