Sensory mats - "Goo bags - recipe for goo. I've had it suggested to use an entire bottle of dollar store hair gel, but this is probably just as inexpensive, and you can make whatever VIBRANT colours you want." Letter writing with fingers or Q-tips.
Come learn an easy trick that will get you the most dramatic, puffy, foamy baking soda and vinegar eruptions and learn the science behind it! From Fun at Home with Kids. Baking soda and vinegar mixed with a tough of soap.
Winter Fluffy Squishy (Secret Ingredient) Slime - this sensory activity for kids uses one unconventional ingredient to make the best slime recipe ever! Your kids will love squishing and stretching this secret ingredient slime!