I think that's a great idea. That's actually what I'll be doing... at this point its a tradition within my circle of friends.
My best friend got the bouquet passed to her when her FI (at the time) was the best man at a wedding, at their wedding this summer she past me the bouquet and they planned that my FI catch the garter, I will be passing the bouquet on to my FI's friend who will be a grooms-maid (not sure what the proper terminology is for that) in our wedding