Blooming Idiot

Here's what I came up with for a bouquet...  I used each of the boys' birth month flowers: 2 sprays of gladiolus down each side for Justin & Corky, a mum at the top for Randy, and a spray of lily-of-the-valley down front for Landon.  There's also 1 white iris in the center, which is the traditional 25th anniversary flower. 
I feel like I need some sprigs of silver, but I can't figure ot exactly what it should be.