I don't have pics, but those square plastic buckets 28-30lbs of cat litter comes in make great containers for jack stands and are easily stackable.
I nest the bottom part of the stands inside each other and put the extensions in the corners of the bucket, two stands can fit inside. My big jack just rolls into a corner and the containers can sit on it. My portable jack sits on those in it's case.
The cat litter buckets make it easy to carry all four stands out at once (2 each bucket) or just a pair while rolling/carrying the jack at the same time.
Here is a picture of the typical bucket:
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