Design several eco-friendly jewellery products

I am looking to start a small product line of fashion accessories: rings, bracelets, necklaces, pendants, etc. (basic jewellery items) using readily available scrap materials (aluminium cans, scrap metal, etc). I am hoping to get some basic sketches/models of preliminary jewellery pieces to get started. It would also be useful if the designer can specify the type of material that would be used for each piece. If this is successful, I will have larger projects for the same freelancer.