In this hands-on activity, kids in grades 1-5 accompanied by an adult will use materials like straws, tape and popsicle sticks to construct the sturdiest tower at the Camas Public Library, 4 to 5 p.m. Oct. 24. The ultimate test? It needs to hold a marshmallow Peep on top. All materials provided. Registration is required at CamasPL.org/TowerChallenge.