1st- I read somewhere of a great (and inexpensive) gift idea for a spouse is a list of 101 things you love about him (or her). I think that a husband would really treasure something like this and I know if my husband took the time to write 101 things he loved about me I would not even be able to read it through the tears.
2nd- I also read in another book about a marriage strenghthening ritual-a 60 second hug. I know when my husband and I were dating it was not hard to hug for that long or longer but after kids came it seemed like our hugging time got cut by a lot. I love the feel of a good hug and so one night I just grabbed my husband and held on for as close to 60 seconds as possible. He squirmed and did all these weird little things and I had to tell him to just chill out but soon he got the hang of it. Now we try and fit at least one in everyday. I didn't realize how much I missed the hugs of our dating relationship. Sure feels good to do it again.