rock tumbler refill

CrunchLabs by Mark Rober Turbo Trick Planes

CrunchLabs by Mark Rober The Crunchinator

CrunchLabs by Mark Rober Elephant Toothpaste Blast

CrunchLabs by Mark Rober Egg Drop Challenge

Thames & Kosmos Dig It Single Packs Rocks & Fossils

Snap Circuits Beginner Science Kits: STEM Learning for Grades 3-6, Includes Instruction Guide

National Geographic Outer Space Dig Kit

Creativity for Kids Grow N' Glow Terrarium: Science Kit for Kids, Educational Toy, Includes Jar, Figures, Stickers, Rocks

Best Choice Products 4-in-1 Science Project Kit, STEM & STEAM DIY Lab Experiments for Kids

Thames & Kosmos Mega Cyborg Hand STEM Experiment Kit: Science Project For Grades 3-8

Learning Resources STEM Explorers Machine Makers: Science Kit for Kindergarten with Experiment Guide

National Geographic Glow-in-the-Dark Solar System Activity Kit

National Geographic Rock + Mineral Starter Kit

Snap Circuits Flight Deck Science Kits: Educational STEM Kit, 2nd to 4th Grade, Boosts Creativity & Motor Skills

Geoworld 10 Insect Set - 10 Real Insects Resin with Magnifying Glass & Booklet - Great for Science Projects - Kids Scientific Educational Toy

Snap Circuits Bric Structures: Educational Science & Engineering Toy for Grades 3-7

Snap Circuits 300-in-1 Science Kits: Educational Electrical Circuit Board Toy for 2nd Grade Engineering Skills

Blue Marble Learn to Draw Projector

Thames & Kosmos Ooze Labs Soap & Bath Bomb Lab: Science Kit with Spatula, Guide, Test Tube, PH Strips

Snap Circuits It Board Game Science Kits: Educational STEM Toy for Creativity & Engineering, Grades 1-4

National Geographic Giant Crystal Growing Lab

Klever Kits 36-in-1 STEM Robot Building Kit - Motor Robot Science KIt Educational Toys Creative Birthday Gift for Boys & Girls Age 8+

Snap Circuits Arcade Science Kits

Snap Circuits Nite Lite Science Kits: Educational Toy for Science, Technology, Engineering, Fine Motor Skills