Does anyone have a suggestion for an inexpensive, small (about 5"x4"), and thin fly box with foam slits? I would like to carry a box of midges and another box of baetis patterns. I do not like the thick boxes as they add too much bulk for my rain jacket. My fly patterns are small (a few size 16, mostly 18 and 20, but down to size 26 on some midges). Thank you.