There are many great tutorials for DIY Montessori sensorial materials. You'll find hundreds of resources for Montessori homeschoolers and caregivers here!
sensory balloon with matching cards. great for teaching 5 senses to preschoolers or keeping toddler hands busy!
Montessori Sensorial Colored Button sorting activity. Children have a natural urge to makes sense of their environment and create order.
A Montessori Sensorial Exercise - Pink Tower Screenshot
Printable Pattern Cards for the Montessori Red Rods and Number Rods.
Color Matching variation (Trillium Montessori)
Sensorial Extensions by montessoriworks This immediately reminded me of my year in Montessori School back in Ohio, and the different weights of each cylinder.
Free Pink Tower/Brown Stair extensions
Montessori Pink Tower and Brown Stair Play
Montessori-pink tower extensions