Jaycar USB Powered Plasma Ball – Touch-Activated Desk Light

Your desk doesn't need another gadget that just sits there. This plasma ball earns its spot because it reacts to you. Touch the glass and the energy arcs follow your finger, splitting, curling, and shifting in real time. It's the fourth state of matter doing a light show on your workbench, and it takes zero setup — plug it into any USB 1.1 port on your PC or Mac and you're done. At 145 mm tall and 100 mm wide, it fills the corner of a desk without swallowing it. Colleagues lean in when they walk past. Kids want to know what it is. You get a small, honest answer: it's a ball of ionised gas doing exactly what physics says it should. No app, no pairing, no firmware update. Plug in, touch, watch it go

• Touch the glass to direct and split plasma arcs in real time
• Plugs into any USB 1.1 port — Windows or Mac, no extra hardware needed
• Measures 145 mm (H) × 100 mm (W) — fits a desk corner without crowding it
• No app, pairing, or drivers required; works on connection