Unique Gadgets & Toys 15-Inch Giant Nebula Plasma Ball 15" diameter globe super giant novelty-style plasma lamp. Colorful streams of electricity dance across the surface of the globe. Touch the glass and the lightening streams attract to your fingertips. Ideal gift for using on desk, science lap, or party. Dimension: 15" diameter bulb with base, 15" x 15" x 21" tall.