On my online hunts for flower brooches, I keep seeing more and more brooch bouquets for sale. They go for around $350 and up and are great for brides that want that vintage look and a sweet memento to remember that special day. If you are feeling adventurous these are pretty easy to make ahead of time, but you will need to start collecting asap! Start hitting up thrift shops, flea markets even relatives. You will need anywhere from 50-90 pieces, depending how big you want it.
There are lots of sites that offer tutorials, some are better than others. I've seen people bundle them together with twisted wire or stick them into styrofoam forms for that rounded shape. www.fancypantsweddings.com had a nice step by step tutorial. Below are more yummy images for inspiration.