Skip to content

Free shipping on orders $50+ within Canada. Some exclusions apply.

Buy Online and PICK UP In Store! Free Gift Wrap in store.

Deal Shop
Shop Gifts
Shop Toys & Books
Shop Brands
- LEGO® Sets
- Coco Village
- Manga-Tiles®
- Brands A–C
  
  Barbie®
  
  Bright Stripes
  
  BRIO®
  
  Bruder
  
  Creativity For Kids
  
  Calico Critters
  
  Coco Village
  
  Coco Studio
- Brands D–K
  
  Douglas
  
  FAO Schwartz
  
  Fat Brain Toy Co.
  
  Fisher-Price
  
  Globber
  
  Hape
  
  Hot Wheels®
  
  Klutz
- Brands L–O
  
  Leap Frog
  
  LEGO® Sets
  
  LiteHawk
  
  Made by Mastermind
  
  MAGNA-TILES®
  
  Ms. Rachel
  
  NeeDoh
  
  Oh Flossy
  
  Our Generation
- Brands P–Z
  
  Palm Pals
  
  Pokemon
  
  Rainbow Loom
  
  Ravensburger
  
  Rise Little Earthling
  
  Rolife
  
  Science4You
  
  Silverlit
  
  Squishmallows
  
  Steiff
  
  Thames and Kosmos
  
  VTech
Apparel
Playroom Clearout

Search

Select your store

No stores are available right now.

Mastermind Toys

Deal Shop
Shop Gifts
Shop Toys & Books
Shop Brands
- LEGO® Sets
- Coco Village
- MAGNA-TILES®
- Brands A–C
  
  Barbie®
  Bright Stripes
  BRIO®
  Bruder
  Creativity For Kids
  Calico Critters
  Coco Village
  Coco Studio
- Brands D–K
  
  Douglas
  FAO Schwartz
  Fat Brain Toy Co.
  Fisher-Price
  Globber
  Gravitrax
  Hape
  Hot Wheels®
  Jellycat
  Klutz
- Brands L–O
  
  Leap Frog
  LEGO® Sets
  LiteHawk
  L.O.L. Surprise Dolls
  Made by Mastermind
  MAGNA-TILES®
  Ms. Rachel
  NeeDoh
  Oh Flossy
  Our Generation
- Brands P–Z
  
  Palm Pals
  Pokemon
  Rainbow Loom
  Ravensburger
  Rise Little Earthling
  Rolife
  Science4You
  Silverlit
  Squishmallows
  Steiff
  Thames and Kosmos
  VTech
Apparel
Playroom Clearout

Country/region

Country/region

Canada(CAD $)
United States(CAD $)

Facebook
Instagram
TikTok
Pinterest
YouTube

Home Collection Thames & Kosmos

Collection: Thames & Kosmos

A leading innovator in STEM play! Thames & Kosmos’ award-winning games and experiment kits are created by a world-class team of teachers, scientists, engineers, designers, expert gamers, and parents.

Price

From To

From $

To

To $

Brand Name

Thames and Kosmos(1)
Thames & Kosmos(30)

Age

4 years(3)
5 years(5)
6 years(13)
7 years(16)
8 years(27)
9 years(26)
10 years(18)
11 years(15)

Category

Marble Track Sets(1)
Science & Exploration Sets(11)

Filter

Sort by:

Price

From To

From $

To

To $

Brand Name

Thames and Kosmos(1)
Thames & Kosmos(30)

Age

4 years(3)
5 years(5)
6 years(13)
7 years(16)
8 years(27)
9 years(26)
10 years(18)
11 years(15)

Category

Marble Track Sets(1)
Science & Exploration Sets(11)

31 products

Sort by:

Gecko Run: Loop Expansion Pack - Mastermind Toys___233052

Gecko Run: Loop Expansion Pack - Mastermind Toys___233052

Gecko Run: Loop Expansion Pack

Regular price $22.99

Sale price $22.99 Regular price

Unit price

/per

Shipping available

Pickup available

Gecko Run: Snake Expansion Pack - Mastermind Toys___233054

Gecko Run: Snake Expansion Pack - Mastermind Toys___233054

Gecko Run: Snake Expansion Pack

Regular price $24.99

Sale price $24.99 Regular price

Unit price

/per

Shipping available

Pickup available

Thames and Kosmos Crystal Growing Kit Deluxe - Mastermind Toys___123336

Crystal Growing Kit Deluxe

Crystal Growing Kit Deluxe

Regular price $54.99

Sale price $54.99 Regular price

Unit price

/per

Shipping available

Pickup available

Wow in the World: Sea Creatures Aquarium - Mastermind Toys___248498

Wow in the World: Sea Creatures Aquarium - Mastermind Toys___248498

Wow in the World: Sea Creatures Aquarium

Regular price $21.99

Sale price $21.99 Regular price

Unit price

/per

Shipping available

Pickup available

Wow in the World: 100 Experiments That WOW! - Mastermind Toys___248496

Wow in the World: 100 Experiments That WOW! - Mastermind Toys___248496

Wow in the World: 100 Experiments That WOW!

Regular price $59.99

Sale price $59.99 Regular price

Unit price

/per

Shipping available

Pickup available

The Thames & Kosmos Rock Tumbler Refill Pack - Mastermind Toys___248493

The Thames & Kosmos Rock Tumbler Refill Pack - Mastermind Toys___248493

The Thames & Kosmos Rock Tumbler Refill Pack

Regular price $24.99

Sale price $24.99 Regular price

Unit price

/per

Shipping available

Pickup available

The Thames & Kosmos Rock Tumbler - Mastermind Toys___248492

The Thames & Kosmos Rock Tumbler - Mastermind Toys___248492

The Thames & Kosmos Rock Tumbler

Regular price $74.99

Sale price $74.99 Regular price

Unit price

/per

Shipping available

Pickup available

Robotic Jellyfish Nightlight Kit - Mastermind Toys___248485

Robotic Jellyfish Nightlight Kit - Mastermind Toys___248485

Robotic Jellyfish Nightlight Kit

Regular price $37.99

Sale price $37.99 Regular price

Unit price

/per

Shipping available

Pickup available

Robotic Dragon Bank Kit - Mastermind Toys___248484

Robotic Dragon Bank Kit - Mastermind Toys___248484

Sold out

Robotic Dragon Bank Kit

Regular price $29.99

Sale price $29.99 Regular price

Unit price

/per

Shipping unavailable

Pickup unavailable

RoboRails: The Robot Monorail System - Mastermind Toys___248483

RoboRails: The Robot Monorail System - Mastermind Toys___248483

Sold out

RoboRails: The Robot Monorail System

Regular price $69.99

Sale price $69.99 Regular price

Unit price

/per

Shipping unavailable

Pickup unavailable

Mechanical Engineering: Machines & Vehicles - Mastermind Toys___248481

Mechanical Engineering: Machines & Vehicles - Mastermind Toys___248481

Sold out

Mechanical Engineering: Machines & Vehicles

Regular price $72.99

Sale price $72.99 Regular price

Unit price

/per

Shipping unavailable

Pickup unavailable

Kids First: Science Kit - Mastermind Toys___248480

Kids First: Science Kit - Mastermind Toys___248480

Sold out

Kids First: Science Kit

Regular price $37.99

Sale price $37.99 Regular price

Unit price

/per

Shipping unavailable

Pickup unavailable

I Dig It! Rocks - Real Minerals Excavation Kit - Mastermind Toys___248479

I Dig It! Rocks - Real Minerals Excavation Kit - Mastermind Toys___248479

Sold out

I Dig It! Rocks - Real Minerals Excavation Kit

Regular price $14.99

Sale price $14.99 Regular price

Unit price

/per

Shipping unavailable

Pickup unavailable

I Dig It! Fossils - Real Fossils Excavation Kit - Mastermind Toys___248478

I Dig It! Fossils - Real Fossils Excavation Kit - Mastermind Toys___248478

I Dig It! Fossils - Real Fossils Excavation Kit

Regular price $14.99

Sale price $14.99 Regular price

Unit price

/per

Shipping available

Pickup available

I Dig it! Dinos - Dino Egg - Mastermind Toys___234483

I Dig it! Dinos - Dino Egg - Mastermind Toys___234483

I Dig it! Dinos - Dino Egg

Regular price $5.99

Sale price $5.99 Regular price

Unit price

/per

Shipping available

Pickup available

Gecko Run: Twister Expansion Pack - Mastermind Toys___233053

Gecko Run: Twister Expansion Pack - Mastermind Toys___233053

Gecko Run: Twister Expansion Pack

Regular price $22.99

Sale price $22.99 Regular price

Unit price

/per

Shipping available

Pickup available

1
2
Next

PERKS
Store Events
Store Locations
Customer Care
Brand Story
Toy Talk

Toy shopping should always be this rewarding.

Subscribe for store updates, and the perks of perks!

Email

You have already subscribed!

By subscribing you agree to the Terms of Use & Privacy Policy.

Shop

Gifts
Toys
Books
Toy Talk

Customer Care

Shipping & Returns
FAQ & Contact
PERKS
My Account

About Us

Store Locations
Store Events
Brand Story
Franchise Opportunities
Careers

Facebook
Instagram
TikTok
Pinterest
YouTube

© 2026 Mastermind Toys. Privacy Policy.

Search

Search

Choosing a selection results in a full page refresh.
Opens in a new window.