Ive tried many things.
Box with a lid, drawer, lap top briefcase.
I want something that will accomodate several colors of yarn, all the tools I use, squirt bottles and can be self contained. I want something that can be opened up and hung from a stall front or a stall wall in a groom stall at a show. I want pockets and pouches that keep everything from getting tangled up amongst each other.
My kit contents.
Yarn balls mostly two to four
lanyards with rug hook and scissors.
squirt bottles with Quikbraid and witchhazel
two bottles hair gel
clipper blade for thinning
I was going to suggest the travel 'toiletries kit' thing. I used one of them (bought at Kmart; i think it was American Tourister brand) on a cross-country bus ride as purse/tote bag kind of thing. Worked GREAT!!!
Nope, best thing EVER is a baby stuff carrier, whaddaya new moms call it? A diaper bag?
Wide grippy shoulder strap, semi waterproof, pockets, side areas, zippers, magnet close, everything you ever need will fit in there.
This one I am using is on it's third season. At the H/J shows I am usually in one area as I braid for a couple barns so I just run it from the car to aisle/stalls. At Arab shows though, I braid for a bunch of barns and have to run all over the grounds, it is AWESOME for that! Squirt bottles and tape for cut finners fit nicely in the outside pockets.
KMart - one of those footrest/step-up/handy tool box carrier things. It holds the whole shebang and more, neatly organized, can stand on it for braiding and use it with your chair as a footrest or as an extra seat too !