If your DH likes fruits he may enjoy smoothies with meals or in between. They can be made with fruit(s) (or veggies.) This time of the year I make pumpkin (I add cinnamon and pumpkin pie seasoning), apple and pear smoothies. Banana goes good in all 3 of these. You can keep frozen berries in the freezer for smoothies too.
Here is a link to give you some ideas. Not all are without sugar but some are. It might give you some ideas.
http://www.kraftrecipes.com/recipes/...00000366129369
EDIT: In the summer months melon smoothies are great.