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 my daughters' school.
There is little that gives children greater pleasure than...by Sigmund Freud via earlylearninghq: Free PDF. This is SO my husband with our granddaughter! I love that he becomes her "playmate" during playtime, but can also be a disciplinarian when needed!