I have loose parts in my home, however we usually used them for projects in a group. My loose parts may include small boxes to create a miniature town. Rocks to explore in the science area. Glass rocks in a basket with light underneath them because they are pretty. Tissue tubs used in a range of crafts. Popsicle sticks with velcro dot at each end to use to build. Water bottle caps and play- doh lids to sort. Baby wipes lids (glue them on a styrofoam poster board. It can be use as peek a letter when you lift the lid or a sensory board). I love loose parts and I collect all the time. This is a very good article. I plan to purchase the book.