I haven't read the book (yet), but I am pretty sure that "I" am a "words of affirmation" type. What makes me feel good is hearing that I am something positive. In other words, that I am a good mother. That I am a good wife. That I am a good driver. That I did (this or that)____ well. That I made ___ feel good when I ___. That ___ was a thoughtful thing I did. That I made someone proud.
What is a negative for me, is seeing my husband do something that I feel like is something "I" should be doing. Yes, my husband does laundry sometimes, unasked. (Yay me, right?) Not so fast.... Yes, I do appreciate it, but it also gives me these negative thoughts that "I" should have had it done already. Why am I not competent enough to have all the laundry done already? (this is NOT from him.... it is ME... my head).
So.... acts of service for me do NOT make me feel good. They make me feel incompetent, usually. :/
For your husband, why not tell him how proud he makes you? What a great father he is (not generically "a great Dad"... but, "when you ___ it just reminded me what a great dad you are")... How secure you are with him. How you appreciate that he goes off to work for you and your family each day.
etc..