Being in flow: celebrating the small things

Wouldn't it be great if adults could have the same delight for small things as kids? My two year old was ecstatic this morning because she found a hippo nappy to wear. She told me about it then waltzed downstairs beaming from ear to ear and told her daddy too! Her happiness lasted for quite a while and was also very infectious. I learn so much from having two toddlers. What do you do to be fully present? How do you get into flow?