“. . . all our activities are easy to do and use only equipment and materials commonly found around the home.”
Start with Science Sparks‘ 2015 post, “Fairy Tale Science Experiments,” for ideas on STEAM programming surrounding tales like “Jack and the Beanstalk” and “Cinderella,” and ‘graduate’ to this building experiment, inspired by “The Princess and the Pea.”
Though not all of the programming resources on this site are free, all are reasonably priced and allow for
Utilize the search feature to find any of the many folk/fairy tale themed activity sets — like this “Fairy Tale STEM Mega Bundle” which designs building/engineering challenges around fairy tale plot points (think a toothpick house for “The Three Little Pigs”).