I did this list with my wife once....
Recreational Enjoyment Inventory
It has a number of ideas in there. Some are for family, some can just be the two of you.
Also, if you go through a list like this together, even if you both look at an idea and think "nah" take a second to let your imagination run free and see if either of you can come up with a way to MAKE it fun. You can work some boring ideas into very fun date nights. Take Astronomy, it may sound boring to both of you, but how about turning your date night into a midnight picnic out under the stars and lay back on a blanket in each others arms and make up your own constellations. Shopping together, turn it into a trip where he also gets to take you into a store like Victoria's Secret to pick out something for you to wear that night. I highly recommend when camping with the whole family to have a sleeping-bag-for-two for you and your husband (even better, bring two tents.) Learning how to cook together can be a very fun time when it involves making a suffle with no clothing, and playing board games or card games is a lot more interesting when adding your own rules. I played Monopoly once where we haggled for each others money or property over removing clothing or giving favors. Not only did we have a great time that night, but we still sneak each other hidden smiles sometimes when we play with the family.
I admit, I'm a guy so a lot of my imagination takes a distinct turn towards the intimate
but there are plenty of ideas that don't have to go that route. Imagination can change anything ordinary into the extraordinary. I'd bet that just getting your husbands juices flowing and his mind thinking about what might interest him will help. The more things you can come up with and do together the greater connection and happiness he will feel.