Yet more packing!!!

In between packing my bags for the Jacky Russell's workshop-surfaces with Lutradur that I am going to, tomorrow and giving Kezzy the 'hurry up' to get her equipment sorted for her camp tomorrow, I continued my playing with unused art materials and made this little brooch.
I had to get some food for Kezzy to take on her camp, and while I was out managed to get these supplies in for my next 'play' -hopefully next weekend, weather permitting. Can you guess what i am going to try????
Rust dyeing- Lynda told us at EG on Monday that these are the ingredients that she used for some of her vessels.