I think that gifts to those involved in a wedding can either be aimed simply at something the recipients would really like, or they can also be personalized so that they are a reminder of your wedding. Either way, you will be best able to decide what gifts these particular people would appreciate. Special picture frames, wine/ champagne glasses, keyhains, flasks, clothing, bags, you name it you can find a site that will personalize it so that it can become a reminder of your wedding, bear in mind though, as I’m sure you are aware, anything labelled as ‘for a wedding’ is bound to be more expensive. If you are interested you could give presents that are more linked with a recognition of the catholic understanding of the sacrament if matrimony, maybe engraved crucifixes, a little plaque with a prayer to the holy family with your names and the date, a passage from scripture about two becoming one, you could probably get personalized rosaries, maybe a prayer card for a saint you and your fiancé both have a special devotion to? I’ll try to keep thinking of ideas, both religious and not, if you want. Also, I’m not sure about what material gifts you can give to a religious, but you could always do a spiritual bouquet for them. Say a set number of prayers for them and draw up a nice card with a representation of what prayers you said. It can simply be written out that you prayed these certain prayers for them, or if you’re artistic you could try drawing a bouquet of flowers, with a little key on the side showing which prayer each flower represents. You could also print off pictures of flowers from online or cut them out of a magazine if your drawing skills are not quite up to par. You could also order some blank cards with a picture of a bouquet on them and then determine what prayers you will say, and how many of each, based on the particular picture on the card. You could probably even buy them a real bouquet of flowers wih a card attached to let them know the spiritual significance of each one. Even if the flowers have to go to a communal setting, it can still be a sweet way of letting them know of the spiritual gift you have given them. I hope this helps!
Congratulations, by the way!!