Many of the hamster cages you can get in Singapore are far too small for a hamster and are also pretty expensive. DIY bin cages are a better alternative because they provide a lot more space and can be customized to your (hamster’s) needs. Unfortunately, not everyone has the time (or skill!) to make one.
My friend, Serene, is providing a DIY bin cage service and below are some photos of her work. Not shown here but she can custom-make bin cages with heart-shape windows too ^_^
If you’d like to get a DIY bin cage made, please contact Serene at 93(six)2-3040 for a quote.