Actually, you can manufacture your own...sort of.
You need any combination of welders' glass (that normally would slide into the traditional welder's helmet) that totals at least 14.
That is, you could combine two 7's, an 8 & 6, three 5s, etc.
As long as the value of the glass totals at least 14, you should be safe to view the eclipse through the glass.
Now, and even safer way to view the eclipse, is either through television (the weather channel or other science-oriented channel that will handle it) or make yourself a pin-hole camera.
You can do this by either poking a small round hole in one end of a shoe box and looking at the pin-hole of light that falls on the far wall of the box..... or, punch a small round hole in a paper plate, and use that one to shade another white paper plate, and look at the image that falls on the white plate.
That way you are not actually looking at the sun, but at the focused image of the sun which is projected onto a viewing screen/plate/wall reflector.