My heart is so joyful at the love you have for your husband! My husband is a remarkable man too, and it seems like we can never celebrate him enough.
My sister is very good at coming up with great "I celebrate you" ideas, but a couple come to mind. She leaves notes (and kiddo pictures and drawings) all over in funny places where he will find them. They have "Daddy is wonderful" days and shower him with celebration. She plans little outings and surprises him.
A few things I have done (my husband is a pastor and feels that pull every day it seems) are to wake up and ask him "How can I bless you today?" I also try to make sure that he knows we are excited when he gets to go biking or something on his own.
Another thing that comes to mind is the question of how he receives love. Have you heard of the "love languages" book? When I began to really pay attention to that, my husband felt so loved.
They do feel pulled so often. The most important thing we can do is to be content, joyful, and delighted to see them when they are home so that home is that refuge. For years I did put pressure on my hubs to spend more time with us, and strained him quite a bit I'm afraid. When I began to sing and laugh and make things as sweet, fun, and calm for him as possible, he settled his "striving" as well.
Bless you and your precious little family!
T.