This is the quintessential LEGO experience for me. You buy a set (31163). It has instructions for three things – a cat, a pigeon, a dog. And then it turns out you can rebuild it into something completely different. How about a sci-fi landspeeder with a charging station and a rest area?
Check out full video on YouTube: https://www.youtube.com/watch?v=eRe139OE6-M
High resolution images and full original post on the LEGO Blog: bricks.kalais.net/post160