Moosh modeling clay for kids to make endless 3D designs; Great as therapy molding clay or sensory play foam for kids; Less mess than kinetic sand, floof, magnetic sand and other kids clay
$ 15.99
Compatible with all molding play sand brands including Kinetic Sand, Sands Alive, Brookstone sand, Waba sand, Moon sand and Magic sand. Makes a great addition to our other limited edition sets.
$ 11.99

Quarks - STEM Engineering Building Toys

Includes Multilink Spheres for Construction,160 pieces
$ 18.99
  • INCLUDES: 160pk set of interlocking gear toys with multilink sphere building pieces to craft colorful structures.
  • INTELLIGENT STRUCTURE BUILD: Build cars, robots, cities and more with QUARKS construction toys designed to challenge clever minds
  • EDUCATIONAL TOYS: Inspire productive activities, constructive projects and building games with these exciting educational building toys.
  • UNIQUE BUILDING TOY: QUARKS atomic designs are a molecular take on building blocks and let kids get hands-on learning
  • TRAVEL TOY with STORAGE TOTE: Your plastic erector set has clasps and a handle for easy travel on long flights and car rides
  • QUALITY ASSURED: We’ll provide a full refund if you’re not totally thrilled this fun, innovative brain building construction set for kids


The USA Toyz Team takes great pride in providing exceptional customer service. And, for us, that means getting your order out fast and processing returns even faster.


Our shipping policy is simple – we select the most secure, fastest service based on your location upon order, and is often fulfilled via Amazon. That helps us keep costs down for you and for us. Here’s the breakdown:

  • FREE Standard Shipping (5-7 Days)

Haven’t received your order? Contact us at [email protected] and we’ll look into it ASAP.


We’re happy to accept returns for a full refund within 30 days of purchase for any item that has not been opened or used. Follow these easy steps to process your free return:

  1. Ensure your return is unopened in its original packaging.
  1. Visit the DIY Return portal and enter your order number and email address.
  1. Give us 1-2 business days, and then check your email for a prepaid return label.
  1. Securely pack your return and use your prepaid label.
  1. Check your email for return confirmation – refunds are typically processed within 2-3 days of receiving your return.


Receive a USA Toyz gift, but it’s not quite what you wanted? No problem! We’re happy to provide a one-time exchange for an item of equal or lesser value. Just contact us at [email protected] and we’ll get you the gift you want.


Please contact us at [email protected] with any questions or comments you may have about our policies. We strive to provide you with a 5-star experience, and we’re ready to help with whatever you need.

      Related products

      Rated 4.8 out of 5
      67 Reviews
      $ 49.99
      Rated 4.9 out of 5
      21 Reviews
      $ 36.99
      Rated 4.6 out of 5
      40 Reviews
      $ 16.99
      Rated 4.8 out of 5
      25 Reviews
      $ 17.99
      Rated 4.9 out of 5
      10 Reviews
      $ 27.99
      « »