Glad it's not just me who must obey the hamster haha. Wonder if my lecturers will accept "sorry I had to entertain the hamster" as an excuse for late assignments haha.
I got a set of the interlocking storage cubes and set it up by joining the top and bottom with cable ties ( there is a thread knocking about on here somewhere that I used). You can get a 3 pack but i ended up going for the big pack as I am impatient and Khali wanted a playpen haha. Here's the link
LANGRIA Interlocking Plastic Wardrobe Cabinet 6-Cube Open Storage and Organizer with Translucent Panel Design for Personal Items, Clothes, Shoes, Toys and Books, 75 x 37 x 111cm, White
https://www.amazon.co.uk/dp/B01LW6EG..._GVg0ybZS8184B
Also see pic of how i set it up. This is only using enough for 3 cubes, so still plenty left and its a fairly decent size. Can flatpack too, but I just leave mine up