Make your own two storey hamster apartment - IKEA Hackers
I converted an ikea KALLAX into a Gerbilarium/bookcase combo unit!! : r/IKEA
IKEA Billy Bookcases for sale in Mississauga, Ontario | Facebook Marketplace | Facebook
DIY Ikea billy hamster cage, Pet Supplies, Homes & Other Pet Accessories on Carousell
IKEA Hamster Cage Ideas - Critter Mamas
Amazon.com : BUCATSTATE Hamster Cage Metal - Small Animal Habitats Stackable with Deep Burrow Chew Proof 31.4in*17.6in*20in for Dwarf Syrian Hamster, Mice, Gerbil, Reptiles : Pet Supplies