a library of public-domain icons (and a GPL naming tool) following the freedesktop.org conventions. Proposed for adoption into Fossil in this mailing list thread . No Tk convenience wrapper yet, but easy to wrap in an ICONS library
some hundred "flat-earth" icons in SVG and other formats used on newer Android versions. A small Tk wrapper using tdom and tksvg including demo code is in AndroWish's assets folder .