THOMPSON, John. Johnny Thompson?s Egg Bag. Specially-sewn maroon cloth bag owned and used by Johnny Thompson for his performance of the venerable Egg Bag effect, in which an egg, placed in the bag, vanished and reappeared repeatedly, even when the bag was in the hands of an audience volunteer. Bag approximately 7 x 8?. Sold together with a duplicate ungimmicked bag, and a blown eggshell used by Thompson. Thompson used black Egg Bags for close-up work, and a maroon bag onstage.