There a few items from my shop being featured in various treasuries, but then there a few which did not receive the spotlight as of yet, and they are just as awsome.
My birds are just beautiful and would make a great item for a "spring themed" treasury.
http://www.etsy.com/listing/41088741/birds-greeting-note-handmade-cards-setI just love anything connected to nature. Some of the birds have a nice metal feel, would go nice with your metal items.
Cheers and good luck.