Circuit kits, coding robots, building sets and science labs, with an age band at the start of each note: 3–5, 6–8, 9–12 or 13+. Treat the box age as a safety line: federal rules ban small parts in toys for children under 3 (16 CFR 1500.18(a)(9)), and a toy for ages 3 to 5 with small parts, or for 3 to 7 with a marble, must carry a choking warning (16 CFR 1500.19).
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Top picks

Start here
Snap Circuits Beginner SCB-20 Electronics KitAges 6–8: 21 snap-together circuits, including a color-changing fan
Skip for a kid over 9: Snap Circuits Beginner is for 5 to 9

Under $25
Stomp Rocket Ultra Launcher with 4 RocketsAges 6–8: stomp to send foam rockets up to 200 ft; no batteries

Unexpected
Teach Tech Hydrobot Arm Hydraulic KitAges 13+: a robot arm run on water, no batteries; box says 12+
Skip for a kid under 12: the hydraulic arm is marked 12 and up
Ages 13+: a 70mm telescope that packs into its own backpack
Ages 13+: 13 Arduino projects in a printed book, Wi-Fi board included
Ages 9–12: 36 pieces build 20+ games and a spinning LED message
Ages 3–5: two big eyepieces, so no closing one eye; 12 slides
Ages 3–5: an 81-piece wooden marble run with 18 dominoes
Ages 3–5: flask, beaker, goggles and 10 activity cards, kid-sized
Ages 6–8: up to 400x, lit from above and below, with 6 rock samples
Ages 3–5: 100 clear magnetic tiles that click into 3D shapes
Ages 3–5, from 4: code Colby the robot mouse through a maze
Ages 9–12: 122 parts for marble runs they design and build themselves
Ages 13+, from 14: a wooden coaster that rolls a ball down its track
Ages 6–8: chisel a T. rex and a Velociraptor out of clay bricks
Ages 9–12, from 10: 125 experiments, from invisible ink to acids
Ages 9–12: build a robot car in 15 minutes, then code it in Scratch
Ages 6–8: kids program moves on a remote, no screen; box says 5–7
Ages 9–12: polishes rough stones into gems; 4 grits included
Ages 9–12, from 10: 2 rockets and a launch pad; engines not included
Ages 13+: a robot ball they can code in Python or JavaScript
Ages 6–8: 21 snap-together circuits, including a color-changing fan
Ages 13+: a robot arm run on water, no batteries; box says 12+
Ages 6–8: stomp to send foam rockets up to 200 ft; no batteries
← → ↑ ↓ to move between finds, S to save, / to search, ? for every key.
You’ve seen it all.
21 photos tagged STEM Toys, in a new mix each day. Mostly from Gifts.
Checked : all 21 finds have a price.
Questions
How much do the stem toys here cost?
21 have a price read today, from $15.99 for Snap Circuits Beginner SCB-20 Electronics Kit to $199.00 for Sphero BOLT+ Coding Robot. 2 under $25, 13 under $50, 20 under $100.
Hiding the price, gift receipts and returns, and the last days to ship for Christmas: Christmas deadlines and gift returns.















