Quill offers a variety of grammar topics as well as themed lessons. If you are looking for a specific topic or concept, you can find it by going to the "Assign Activities" tab. From there, click "Explore all activities in our activity library":
That will bring you to our Activity Library. In our Activity Library you can filter based on Activity Type, Readability Grade Level, CCSS Grade Level, as well as Grammar Concept, Activity Topic, and our Content Partner (College Board or Core Knowledge).