In 'Spy School Goes North', the gadgets are straight out of a junior spy's wildest dreams. The main character gets this awesome wristwatch that doubles as a grappling hook - perfect for scaling walls or swinging across gaps. There's also a pen that shoots sleeping darts, which comes in handy when you need to take out guards quietly. My favorite is probably the holographic map projector that fits in a backpack, showing real-time terrain updates. The villains have some nasty tech too, like motion-sensing drones disguised as snowflakes that blend perfectly into arctic environments. The book does a great job balancing realistic spy gear with just enough sci-fi elements to keep things exciting.