A Gemini Gem for teachers and instructors: upload your rubric and a student submission, and it drafts criterion-by-criterion feedback quoting the student's own work, with one next step per criterion. The teacher reviews it and assigns every grade.
A Gemini Gem for product managers: paste or upload raw feedback from support, sales, app reviews and surveys, and it rewrites requests as underlying problems, clusters them, counts sources and segments, and flags urgent items, ready for roadmap discussion.
A Gemini Gem for sales reps: it plays a realistic buyer who raises objections based on your product and deal context, then gives specific feedback on each answer you give, with a short debrief at the end.