A plan for accessible charts – Benjy Stantonbenjystanton.co.uk/blog/a-plan-for-accessible-charts/
A list of user research findings, accessibility report findings, best practice, resources and good ideas that I’ve collected over the past 2 years.
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