For a few years, I taught in the two year old class. I tried to provide as many sensory experiences as I could, but since two year old children often put things in their mouths, the best sensory experiences were those with edible ingredients. Fingerpainting with whipped cream was a hit! Clean up is easy when you use paper plates. This works well with older children also. Who doesn't love whipped cream?
Here is a link to my Pinterest board with many ideas for sensory activities:
https://www.pinterest.com/cindibernasconi/preschool-science-and-sensory-play/