This is a huge problem for me every year when I go out west for two weeks. Always another fly to tie. I take a kit----ship it actually-----that I think contains everything necessary but I always end up buying a few flies or materials to tie with. Part of the fun actually. We discussed next year only being able to take a dozen flies to start and tying as we go. Put some pressure on to choose the right ones to start and get us tying right away to restock the boxes.