The sparkly toy dinosaur that rode along on SpaceX's historic launch is now selling out almost everywhere

· The toy dinosaur that rode aboard SpaceX's historic launch last weekend was an instant hit, and it's already selling out at many major retailers. 
· The blue and pink dino served as the Crew Dragon's "zero-gravity indicator," meaning it started to float once the spacecraft left the pull of Earth's gravity. 
· The $4.99...