Idea for Cheap Fly Storage Foam...
Here's a picture of the foam I use to hold my flies, I made an old wooden box into a storage box for new flies.
This is some kind of ribbed insulation from Home Depot, comes in 50ft rolls for about $5. It's about 6" wide. Works great.
http://members.cox.net/jekelly/roll2.jpg
Re: Idea for Cheap Fly Storage Foam...
craft foam comes thicker than the stuff we use to tie chernobyls, etc. Some of it is 2-5 mils thick. I found some thick stuff with sticky backing....makes great fly box foam, you can cut slits in it for the larger streamers to hold them down in the box further.