Make an outdoor music wall. Ages Respond positively to transitions from desired to less desired activity when paired with music. Moderate movements to tempo (fast/ slow) and dynamics (loud/soft) of music heard.
DIY Turn PVC pipes into a playground musical instrument. I wish this had the instructions with it, but I might be able to figure it out. This might even work as a service learning project for the playground
Muffin Tin Fun - plus 19 other fun activities for your old. Also dye spaghetti different colors and let baby explore the cooked noodles. Explore a bowl of coffee beans, sand, salt. All with supervision of course.