Love is nothing but the best gift a husband can gift to his wife. letting your wife know how important she is in your life. having dinner outside or out of a country is the best time for you both to relax & enjoy,vacation trip
I second on that, love is the greatest gift you can give. When it comes to material things it depends on what she likes.
Woman knows the ability of her husband. Your wife is not gonna demand an expensive diamond ring or a fancy car if you cannot effort. And what's better than love you can give her? She'll be happy a lot if you gift her only a bunch of flowers .