Cabelas has there own branded tying bag which works great for me. I take it to anything from a half day class to a 4 day fishing trip. It retails for $39.99. Just be aware that the spool holders are kind of tight and will damage your wire if it is loose when you put it in there. I bought some plastic spool holders at Hobby Lobby and they fit great in this bag. Definitely recommended.
http://www.cabelas.com/fryprod-0/product--...11961.uts.shtml