Birdwatching is a cheap and sweet hobby (we’ve got a pair of Lidl binoculars and a bird guide that we cross off birds we’ve spotted stashed permanently. in the bottom of our pushchair. But if we want to splash out on our family obsession, the London Wetland Centre is where we’ll spend our money. It costs around £27 for a family (although kids under 4 go free) and this weekend has a stack of activities including natural dyeing, crafts and (awww!) otter feeding!