My 2 year old twin grandsons are staying with us for a few days while Mom and Dad have some deserved time off. I must be really out of shape, because at the end of the day, I just need to put up my feet and chill. They are so much fun, but they really keep us hopping. After a while, we don't even bother to pick up all the toys; they can pull them out faster than we can gather them. But we treasure every moment with them, because they grow up way too fast.