newcommandglyph[1][1]{
  begin{tikzpicture}[scale=0.1]
    draw[lightgray] (0,0) to (0,4);
    draw[lightgray] (0,0) to (3,0);
    draw[lightgray] (3,0) to (3,4);
    draw[lightgray] (0,4) to (3,4);
  end{tikzpicture}
}

begin{document}
glyphglyphglyphglyph
end{document}