Like any shochet, I use a chalaf (חלף), which is a dedicated shechitah knife.
Among the rules of shechitah knives is that the knife has to be uniformly sharp, and without nicks, along its entire length.
This presents a problem, when I need to take my knife from one place to another. I can't really put it in my knapsack without it getting damaged, and if I'm travelling by subway I can't exactly hold it in my hand, especially not post-9/11.
How can I transport my knife safely, without wrecking it?
Now, there are those that use those really cool, dedicated leather sheaths, but I wasn't able to locate them in any online store, nor in any physical store I went to. ....If I were to be killing animals, I would consider making my own out of the skins of animals that I killed, but so far I've only been killing poultry.