He lifted the tube a bit, leaving the end still in the vase. "Ashley, could you please get inside this vase for me?" He let go, and her hand slid down inside the tube. He pulled the tube up, and out of the vase. The audience applauded and the hand sticking out of the vase's the narrow neck waved, and from within, they heard "Ta da!" The Magician showed the vase from all sides, tilting it up so the audience could see she really was inside.
"That opening is just large enough for her wrist, so she can't pull her hand in... and can't push her arm out, either." The girl inside wiggled her forearm and hand to prove his point. "Now the puzzle- how shall we get her out?"
From the side of the stage, Hitomi called, "Okay, I'm ready!"
The Magician stood up, and rolled the vase to one side of the stage. "Finally, no further need to improvise. Ladies and gentlemen, I bet Ashley would like to see this next illusion, don't you think?" He pulled out the knife, and pulled it up the side of the vase, then peeled back the opaque plastic cover to reveal transparent glass beneath. Inside, the view slightly distorted by the curve of the glass, his volunteer was clearly visible. The Magician quickly spun the vase around once more, showing her tightly curled up body pressed against the sides of the vase all around.
Ashley peered out from under her right elbow and smiled, waving her other hand. The stunned audience applauded even louder. "Ta da!"
The Magician bowed, then turned the vase around so his rather contorted volunteer could watch the rest of the show...