For yearsI have been satisfied with a well designed attache case that is about 4" deep. I use it for travel and demonstration tying, it is even big enough to hold a suitable lamp plus extension cord. Cost was about $3 in a thrift store. I carry everything in heavy duty ziplock bags and sealable plactic ware. It aids in organization, but most important it acts as a deterant to insect pests. There are many commercial products that either seal poorly, or will be effected by the use of moth crystals. Be careful of what you trust collection of fur and feathers to, appearances can b deceiving.