Free UX Flowchart kit for Sketch/Figmauxflow.pro/
Hundreds of vector cards, arrows and elements for creating quick sitemaps, flow charts and diagrams.
Tufte-LaTeX : A Tufte-inspired LaTeX class for producing handouts, papers, and books
Blank graph paper templates that you can customizes - Paperkitpaperkit.net/
Make your own graph paper. Customize page and grid size as well as the color of the lines. Download as a free printable PDF