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The use of polarised sun glasses is dangerous and will damage your sight. Do not use them. You can buy eclipse glasses from Bintel and these are safe.
Only #14 welding goggles are considered safe if you are going to use welding glasses. The glass is dark enough and thick enough to protect the eyes from the dangerous rays. If you are not sure of the type of welding goggles then don't use them. It is not safe otherwise.
No looking through pinholes either. You can make a pin hole camera and have it project the image onto some carboard and you look at the cardboard but definitely not looking through it.
Bottom line is, the only time it is safe to look at the sun with naked eyes during an eclipse is when you are in the zone of totality. When the moon has completely covered the sun and you can only see the corona. If the barest amount of sun light is still showing then you cannot look at the sun with the naked eye or with an unprotected telescope. You will go blind.
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