Lariath- Live a Little.: Hamster DIY- IKEA Detolf Cage Lid
Detolf DIY - text, pictures and instructions! : r/hamsters
Ikea Detolf Cage Lids - Etsy
Amazon.com : BUCATSTATE Hamster Cage Metal 2.0 - Small Animal Habitats Large Stackable with Top Access Easy Assemble 39.3L*19.7W*20.6H Inches Dwarf Syrian Hamster House for Guinea Pig, Gerbil (774sq inch White) :