One of my favorite projects I ever did in my classroom was a PBL that supported our local animal shelter. My kids got to cover reading strands and math strands. We learned about goods and services and money and we got to support dogs and cats in need. This podcast walks you through how I did it and the corresponding blog post will explain it even more. If this sounds like something you want to try in your classroom I also have a product that can help you, linked below https://www.teacherspayteachers.com/Product/Projects-for-a-Purpose-A-PBL-for-the-Special-Education-Classroom-5051710