Off the top of my head-
you could open a Hhonors account for your husband, get the signup bonus and the two profiles updates, and spend some Mypoints if you have them. Have him get his own Hhonors Amex also. Also, if you have any spare ailine miles in a frequent flyer account that is a Hilton reward exchange partner, you could transfer those miles over to an Hhonors account. After all these bonus points post to his account, contact Hhonors customer service and have them combine your two accounts into one married "mutual fund" hhonors account.