I previously posted photos of my Dragon Mini Box for storage and transportation of WIP and display miniatures.
I have a second carrying case for transporting gaming figures that my mother- and father-in-law gave me for Christmas last year. I bring this with me to D&D every week. It is a Battle Foam P.A.C.K. 216.
It has two levels, the top for 28mm miniatures, and the bottom for larger figures and terrain pieces. Half of each layer is taken up by uniformly-sized rectangles. The other half is made of precut cubes that can be pulled out to create a custom shaped space.