These easy STEM-at-home activities can be performed at home by parents and children, using everyday materials that can be recycled or obtained in dollar stores or supermarkets. The STEM project ideas develop concepts in an engaging, step-by-step manner. These concepts include gravity, friction, air resistance, levers and tension. Each unit provides rich photos and videos, illustrating a wide choice of materials, instructions for assembly, troubleshooting tips, and suggestions about customizing the design. These STEM activities for kids at home are particularly suitable for home schooling, down-0time from remoting instruction and/or motivating and developing STEMJ hobbies.