I try to give hugs and kisses and declare my love every single morning before the boys head off to school, and the same when they come home.
How I've missed you! Did you have a good day?
Sometimes Oftentimes it's as they're running out the door because they couldn't find a backpack or a shoe or I've made them change into their nicer jeans. Or I'm breakfasting the littler ones or deep in my writing.
But no matter what, the boys know to come get their hug and kiss.