No, you do *not* have to scan it. If you had the full Acrobat installed, you could print to the PDF printer - which creates a PDF file. Alternately, install a PostScript color LaserJet assigned to FILE and print to that. Then get the freebie GhostScript on the web, and use that to convert to PDF, TIFF, BMP, etc.
Since you like to make your own symbols, use CorelDraw or other 2D draw program...