It's seldom in WA that it rains for a whole weekend, but if this was forecast, I think we'd just take advantage and plan indoor activities for ourselves and our two kids. The cinema or a movie a home is a great one, a craft activity is always popular as is playing games for an hour or so. Visiting the local museum can be fun, and a lot of our local ones are free or very cheap to get into. We have used play centres on occasions, but I think a lot of parents also think of this option, and so invariably they are quite crowded. when the rain isn't too heavy, there's nothing better than putting on gumboots and rain coats and going splashing in puddles. Personally, I would love the idea of a lie in, but my three year old generally has other ideas.