Some must-have tech gadgets for travelers include noise-canceling headphones to block out unwanted sounds during flights or train rides, a portable charger to keep devices powered up while on the go, a universal travel adapter to ensure you can charge your devices in different outlets around the world, a lightweight and versatile laptop or tablet for staying connected and getting work done, and a compact digital camera or smartphone with a good camera for capturing memories. These gadgets can help make travel more convenient, enjoyable, and efficient.