Reddit reviews Wooden Platform，Swing and Ladder Set for Mouse, Chinchilla, Rat, Gerbil and Dwarf Hamster,Climbing Kits for Small Animals (Burlywood)
We found 1 Reddit comments about Wooden Platform，Swing and Ladder Set for Mouse, Chinchilla, Rat, Gerbil and Dwarf Hamster,Climbing Kits for Small Animals (Burlywood). Here are the top ones, ranked by their Reddit score.
❤Fun playground and resting place. Made with pet safe materials. Relieves boredom and increases activity level.❤Ideal for hamster, mouse and other small furry animals.❤Quickly and easily attach to any cage.❤Securely attaches to cage with a built-in bolt and wing nut.❤Package including：1*climbing kit
Best thing I could find (10.7 x 18.4 x 8)
The only thing I would worry about is the little ones chewing on the coating, this size should cover 1/3 long ways.
Also you may be able to use the hooks on this not only as a stand but you could make very small holes and hook it to add even more room.
However if this doesn't work, you could add adhesive hooks so you can use cage hooking items like this
If the hooks aren't what you want then you can add items like these:
Best Option
Wooden Balcony
Platform
Platform and Swing
Platform and Swing - The Squeequel
I really hope this will help you and the little ones out!
Edit: Forgot to add this one