Sketchsheets - Ready to print sketch sheet templates for UX designerssketchsheets.com/
Sketchsheets is an open source project dedicated to providing free printable templates of the latest devices and platforms for wireframing designs.
Free UX Flowchart kit for Sketch/Figmauxflow.pro/
Hundreds of vector cards, arrows and elements for creating quick sitemaps, flow charts and diagrams.
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