Birthday gifts for a brother who loves STEM, $50 to $100
Magna-Tiles
Castle Deluxe 48 Piece Set
$69.99 at Magna-Tiles
Enough tiles and castle pieces to build something worth leaving up overnight, and they mix with every other set.
Seen at Magna-Tiles, 30 Aug 2026
National Geographic
Dual LED Student Microscope (paid link)
$50 to $100 at Amazon
A dual LED student microscope with prepared and blank slides, listed for ages 8 and up.
Checked 31 Aug 2026
PlanToys
Spinning Gears Playset
$54.99 at PlanToys
Wooden gears that only turn if they are placed right, which is the first machine most children build on purpose.
Seen at PlanToys, 30 Aug 2026
LEGO
Technic Aston Martin Valkyrie Toy Car
$64.99 at LEGO
Named by Popular Mechanics, 2025.
Checked 31 Aug 2026
Thames and Kosmos
Gecko Run Marble Run Challenge Edition
$79.95 at Thames and Kosmos
The larger window set, with loops and a launcher that turn the track into a problem rather than a straight drop.
Seen at Thames and Kosmos, 30 Aug 2026
PlanToys
Little Tool Bench
$99.99 at PlanToys
A wooden workbench with tools that really turn the nuts and bolts, for the child who follows a parent around during repairs.
Seen at PlanToys, 30 Aug 2026
Magna-Tiles
Downhill Duo 40 Piece Set
$69.99 at Magna-Tiles
Tiles plus ramps and cars, so the building has a point at the end of it and the tower gets used instead of admired.
Seen at Magna-Tiles, 30 Aug 2026
Makey Makey
Retro Joystick Invention Launchpad Starter Bundle
$79.95 at Makey Makey
The Makey Makey kit plus the parts to build a working arcade joystick out of cardboard.
Seen at Makey Makey, 30 Aug 2026
Magna-Tiles
Undersea Adventure 58 Piece Set
$89.99 at Magna-Tiles
A large magnetic tile set themed around the sea, for the child who has the plain tiles and has run out of ideas.
Seen at Magna-Tiles, 30 Aug 2026
National Geographic
Rock Tumbler Kit (paid link)
$50 to $100 at Amazon
A hobby rock tumbler kit listed for ages 8 and up; polishing is a multi-day project.
Checked 31 Aug 2026
Thames and Kosmos
Chem C1000 Chemistry Kit
$59.95 at Thames and Kosmos
A chemistry experiment set for ages 10 and up, used with adult supervision as the manufacturer requires.
Seen at Thames and Kosmos, 30 Aug 2026
Makey Makey
Makey Makey Classic
$51.95 at Makey Makey
Alligator clips turn bananas and pencil drawings into keyboard keys, and it needs no software on any computer.
Seen at Makey Makey, 30 Aug 2026
Thames and Kosmos
My Robotic Pet Coding Chameleon
$54.95 at Thames and Kosmos
It gets built from the motor up and then programmed to fire its tongue at things, so the coding has a visible payoff.
Seen at Thames and Kosmos, 30 Aug 2026