Brooches are mighty expensive little pretties. I purchased all of mine from local charity shops for an average price of £2/brooch. Buttons and clip-on earrings also work well because you can secure wire to the holes/clips.
Special Tip: Often, necklaces & bracelets have multiple big beads or brooch-like charms and they're sold for the same price as single brooches. £2 brooch vs. £2 necklace (that can be taken apart and turned into 5 brooches!)
This was my first attempt at making a brooch bouquet.
It takes a little practice but I fully intend to have another go at it — see how you get on!