If you guys have a Joanne's near you they are selling the box in my pictures for $4.99 right now. I just picked up another one to use for large trout/bass flies. That plus the 6mm foam for $1 and you just spent $6 for the very same box Cliff sells for $45.
If you want to shop the online store you can get the same box Cliff use for his $60 box
on sale for $9 right now, That plus two pieces of foam instead of one and you have a monster streamer box for dirt cheap.
The one in the pic above is for pike flies.