What do you find adorable about your baby/child?

My 5 month old son loves being swung around (but appropriately for a 5 month old). He giggles and giggles the entire time. I craddle him in my arms and swing him, fast enough for it to be exciting, but slow and firmly enough that he's safe. We do it several times a day. It's the only time I can get him to laugh.