I see from your profile that your husband works away from home - that must be difficult for you.
If he's coming home around Valentine's Day then I'd suggest a gift that will allow you to spend time together, perhaps theatre tickets or dinner at his favourite restaurant.
If he's going to be away, then your gift should be something that reminds him of you. How about a pair of cell phones or a calling card so that you can spend Valentine's Day evening talking to each other? Or make him a short video or sound recording to tell him how much you miss him!
Good luck, Geoff