Good to go
like JohnScott, i package the ingredients for what i'm likely to tie in ziplok bags. most classes you go to will supply ingredients other than thread.
the vise and tools all go in a soft make-up kit that's about 3x3x7 with two levels. the bottom level is big enough for the vise and its base, as well as 6 or 7 spools of thread in likely colors. the divisions in the top, which were designed for make-up brushes and so on, hold the tools very nicely. if i only use the c-clamp for the vise, i can tuck in a small tying light--a godsend for tying in the badly-lit places where they seem to hold classes.
all of this goes in the bottom of the duffle or suitcase.
fly fishing and baseball share a totally deceptive simplicity; that's why they can both be lifelong pursuits.