In my case, I don't fret about "messy" blocks....that's what irons are for!!! ;) :D

Jan in VA

Consider adding a layer of thick foam on top of the blocks in the box. The lid will compress the foam but the pressure will hold the blocks flat, in case the box tips during transport.

I have one of those totes like artists use. not a large one but it has several plastic dividers in it that fit 12 inch blocks and zips up and has handles. I tend to keep orphan blocks in it. Got it at Hobby Lobby most likely.

I use a 16" long piece of 2" pipe insulation (black foam in a cylinder shape) covered with quilted fabric. It has a 20 " quilted piece attached that I lay my blocks on and roll up. I attached a fabric tie that wraps around the roll and that's it. Sounds clear as mud but it really is very easy and works. I have one for my redwork also.

A noodle (children use in swimming pool) would also be useful instead of insul pipe. I've used it in shipping to cushion glass or fragile items and they are relatively inexpensive and can be cut with an electric knife.

I use those plastic cases from JoAnn's. They are pretty reasonably priced with a coupon. They stack and hold 12 x 12 blocks. When I am going to a class it holds all my supplies--pins, scissors, cutter, etc. The only things that don't fit are the cutting board and ruler. Makes transporting things easy.
Sue

I made one of these, works great! These instructions have a link also to a YouTube video of it being made if these directions aren't clear enough.
http://www.rileyblakedesigns.com/cut.../05/ufo-to-go/

Thank you for the ideas. I hate having to waste the first part of my time in a class ironing when it was already ironed when I left home. Has anyone else used the kitchen foil to wrap blocks in?