This is an excellent source of inspiration for anyone in charge of product management in a startup, regardless of its stage of development.
The article lists more than 70 frameworks to help prioritize features and projects for products. Along with numerous examples of slides and diagrams and organized in several sections (grids, scoring, processes, etc.), it is impressively thorough and will be of great help to any Product Manager.
Also known as Value vs Complexity, Action Priority Matrix, Benefits vs Cost, or Value vs Cost and sometimes simply “The Four Quadrants”. This model can help product managers understand whether a feature is one for the backburner/filler/nice-to-have, a low hanging fruit/quick win, or something to discard altogether.