I have had several brides send me their brooches and heirloom jewelry for me to include in the flowers, although this shows you how to easily add a pin, if you want to do it yourself.
I know at least one bride has attached a fire fighter badge into her bouquet and others have used their mother or grandmother's jewels for "something old." Krystle and Jared's wedding was previously featured and the fireman's pin was included in her bridal bouquet. (Two pictures below by Sarah Marble Photography)
I certainly don't mind adding your brooches or pins into the bouquets, but wanted to share this option with you. You can check out my etsy shop for some ready made brooch bouquets or I can create something custom for you! I do have an assortment of vintage jewelry in different colors (not displayed in my shop) so if you want a burlap brooch bouquet, just ask and let's see what we can create together!