However, if you're looking for a cute and quirky name, here are some ideas:
* For male rats: Snowball, Casper, Ghost, Cloud, Cotton, Milky, Sugar, Marshmallow
* For female rats: Snowflake, Pearl, Ivory, Blizzard, Daisy, Luna, Mochi, Cream
Ultimately, the best name for your white rat is one that you love and that fits their personality!