With all things sourdough there is a lot of discard from feeding your starter(s). My favorite thing to do with it is to make sourdough English muffins. My family loves them, they are easy to make and so tasty. I typically follow the King Arthur recipe which uses a mix of commercial yeast and starter to get he rise and flavor.
Check it our for yourselfhttps://www.kingarthurbaking.com/recipes/sourdough-english-muffins-recipe