In the 'why didn't I think of this first' catagory

Caddisfly jewelry:

http://www.blaghag.com/2010/02/when-art-meets-biology-caddisfly.html

The creek near the house I grew up in was full of caddisfly larvae, along with lots of other wildlife (it was a very healthy stream). Dad and I would set up aquariums and fill them with kidnapped creatures (we always returned them after a week or two). We could have done this ages ago.


I wonder if they 'helped' the larvae design their homes by present them with different types of stones during the building process, or just gave them a pile of gold and stones and let them figure it out themselves.