Like tenkara, tying tenkara flies is simple. Basic fly tying skills, tools and materials are all you need. The Tenkara Flies pages show the step by step instructions for tying nearly all the flies I use.
If you do not have a vise, you can still tie flies. Please see the Fly Tying with Clamps and Nippers article. Having a vise and some fly tying tools does make it easier and quicker, but it is not at all necessary. Flies tied "in hand" or with just clamps and nippers tend to be imperfect, disheveled, very "buggy" and surprisingly effective!
For those who want to tie their own tenkara flies, I have tenkara hooks that to my knowledge are unavailable anywhere else in the US.
For some time I have been interested in fly fishing for micros. If you want to fish for small fish you need to use small flies. Whether you are interested in midge hooks for micros or for sipping tailwater trout, I have the Varivas Ultra Midge hooks in sizes 28 and 30.
Although you will probably want to use a vise when tying at home, if you tie during a fishing trip or even at streamside, you probably will not have a vise with you. You can tie flies that are very effective (although perhaps not very neat) with just a pair of Dr. Slick Spring Creek Clamps and a pair of nippers.
It is not at all hard to do and takes only a little practice. Click here for more information and step-by-step instructions.
And really, if you tie for the fish rather than for the fisherman, and view a fly as a tool rather than a small piece of art, you might decide you don't actually need a vise anyway. Flies tied with clamps and nippers look pretty buggy - and they do catch fish.