The small ones are brooches!
The big one on the far right in the above photo is made out of felt, lace and denim. I am really short, so every time I buy a new pair of jeans I have to take them up and over the years I have ended up with a fair bit of spare denim. I thought I would try putting it to good use for once! I have never sewed using denim before and it was quite tough, but after battling with it for a while I am quite pleased with how it turned out.