This color sorting train is a great way for kids to learn colors. They can also work on counting. A fun color recognition activity for toddlers and preschoolers Could have them run around room grabbing toys to match to colors.
Shaving Cream Blocks: an easy toddler activity building with shaving cream and block. A great preschool activity that's easy to set up. Kids Activities Sensory Play Toddler STEM STEAM Engineering for Kids