C.W.
If they already have everything they need what about making some kind of donation in their name as a gift to maybe a homeless shelter or a shelter for battered women. I know a lady well she was my supervisor and when she remairried they had 2 households of things. They requested if you really have to give a gift then make it something that a homeless shelter or a battered women's shelter could use. They took two van loads themselves to I think it was the drop in center in downtown Cincinnati. They also included food. Made them feel good and a lot of strangers too. You could arrange for her to go to a day spa and get pampered either right before the wedding or directly after. Do they like to work out maybe a guest temporary membership at a gym.