Mum, I've done research and want a pet mouse. Mice only cost $35-50 total for supplies. They need a cage, food, water, toys, and bedding. I will make a safe cage from a plastic tub. Mice need attention, so I will play with and care for it properly by cleaning its cage weekly, feeding a healthy diet, and giving it exercise. If we travel, I will find a pet sitter or boarding. Please consider letting me get a mouse, as I have learned they make good pets.