Unique Christmas Gifts with a Science Twist

How to choose, person by person

Him

The best Christmas gifts for men are often things he can build or handle. The V8 Engine Model Kit ($119.99) goes together part by part, 535 of them, before its pistons and crankshaft start moving, and the Euler's Disk ($99.99), in polished steel, puzzles everyone as its spin seems to speed up. For his desk, the Rainbow Magnetic Balls (from $29.99) keep his hands busy, and our unique gifts for men round out the list.

Her

If you are looking for Christmas gifts for women, think light and slow motion. The Infinity Cube Lamp (from $99.99) is made of dichroic glass that changes color as you walk around it, and the 3D Hourglass Sand ($59.99) builds dune landscapes grain by grain each time you turn it on its base. The Orbital Solar System Desk Toy ($53.99) turns slowly on a desk or shelf, and more ideas are waiting among our unique gifts for women.

A kid, ages 5 to 8

At this age, Christmas gifts for kids should be ready to play with right away. The Magnetic Building Blocks 300 Pieces ($109.99) let them snap together whole worlds without a screen, and the Dinosaur Egg Dig Kit ($49.99), for ages 6 and up, turns them into paleontologists with a hammer, scrapers and a brush. The Wall Climbing Gecko ($49.99) is a first taste of remote control: it climbs windows and walls. Our page of gifts for kids 5 to 8 has more ideas.

A kid, ages 8 to 12

Between 8 and 12, the urge to make things and fly them takes over. The Robot Building Kits (4pcs) ($79.99) give them four wooden robots to assemble, the 3D Pen for Kids Starter Set ($59.99) turns their ideas into objects they can hold, and the Drone With Camera For Kids (from $94.99) is a first step into flying and filming, with a 1080p camera. Every idea is gathered on our page of gifts for kids 8 to 12.

A teen

A gift for a teen has to earn its place in their room or in their hands. The Periodic Table Of Elements With Real Elements ($99.99) holds 83 real elements set in clear resin, the Galaxy Night Light Projector Infinity ($114.99) turns the bedroom into a night sky with 32 films to choose from, and the Math Puzzles Brain Teaser ($39.90), a wooden puzzle, tests their patience: turn the circles until the numbers add up to 50. More ideas on our page of gifts for teenagers.

A grandparent

For Christmas gifts for grandparents, choose a beautiful object to set down and enjoy every day. The Storm Globe ($84.99) decorates the living room with crystals that change their look as the temperature shifts, and the Galileo Glass Thermometer (from $39.99) reads the room temperature with six floating glass balls. The Sand Pendulum ($67.99) blends art and science: it swings over a basin of sand and leaves a new pattern each time.

How much to spend?

What makes a good science gift at Christmas

A good science gift takes seconds to understand and weeks to explore. Under the tree, it has an instant effect: sparks that dance, a motion that puzzles, an object everyone wants to try. Then it explains something, from the cycle of an engine to the way a prism splits light into colors. Start from what the person already likes to do (tinker, observe, decorate or take on a challenge) rather than from their age alone. And if you have several people to shop for, take a look at our gift boxes, which bring several objects together around one theme.