My final "building" themed storytime for the summer had to do with forts. We read books about forts, then I brought out two giant cardboard boxes that I had available for kids to color on or play in or read in as their own forts.
Opening Rhyme: Open Them, Shut Them
Rhyme: Two Little Blackbirds
Book: Not a Box by Antoinette Portis
Song: "If You're Happy and You Know It"
Book: Harry's Box by Angela McAllister
Rhyme: Dinosaur, Dinosaur, Are You Behind the [Color] Door?
Song: "Head, Shoulders, Knees, and Toes"
Book: The Tree House by Marije Tolman