Turn Milk into "Plastic"! - great science experiment to make plastic! (See comment by "Ben" for actual science explanation)
DIY 15 Ocean Sensory Crafts for Kids from Fun at Home with Kids. Really good roundup of sensory DIYs from foam to ocean slime.
Outdoor activity: Love this simple, free, printable nature scavenger hunt for toddlers! It's easy and perfect for little learners who want to explore. The perfect outdoor activity for toddlers!
JULY 27 Apple Science Activity Parts Of An Apple - like the idea of something like this for the discovery table
Some love goes together better than Oil & Water. Valentines Oil and Water Science Density Experiment - easy to prepare science experiment for Valentine's day!
Touch and Feel Hearts - simple sensory activity for preschoolers and toddlers!
one pinner says, "weather. getting my little guy to set the weather dial with what is going on outside is a fun game we play." Not a bad idea.