Cigar Box Ukulele Dimensions?

Does anyone have any ideas as to the best cigar box dimensions to make good cigar box ukuleles from? In other words, do certain size cigar boxes work better for sopranos versus tenors? I realize that bigger boxes are probably better for bigger ukes, but are there standard sizes? Do certain types of boxes work better than others?

Thanks for any help.

It's more the neck than the box that counts... just make sure you get a box large enough to accomodate the scale-length required for the neck you've choosen.