"Illustration Kit" is a free material website provided by two designers, khushmeensidhu & dilpreetsio. The website offers a wide range of consistent and minimalistic illustrations that are suitable for commercial websites or presentations. There are also over 200 background illustrations that can be combined and matched. All materials on the website can be downloaded for free and are licensed under CC0, which means they can be used for personal or commercial purposes without any attribution or registration required. The website also provides vector SVG and PNG formats for download. Users can also use their Figma plugin to directly apply their work. Additionally, users can also subscribe to their illustration updates via email for free.