My FI lost his mother in November and he misses her terribly and wishes more than anything that she could be there when we get married. I also want to incorporate her in his gift but I'm not sure how. I was thinking maybe get him cuff links for the wedding with his mothers initials or something along those lines.
That is a nice idea!!!
If you can incorporate something, but don't mind if it is physically on him, you could do the bouquet picture frame charms. I got one and put my mother's photo in it - I lost her 10 years ago. I have considered also putting a picture of her on the signing table - which is something else you ladies could consider. I'll post a picture in a second of my charm.