nicolai and i often say thank you to each other when it's time to tuck in at night.
simply, "thanks for hanging out with me today".
of course there are lots of kisses, hugs, "i love you", and snuggles, too.
as an at-home mom though, i really do just hang out with him all day.
we go to the playground, the library, cook in the kitchen, visit family in town, color/craft/play dough, attend singalong or story time, and occasionally run an errand.