Sharpening Sewing Scissors Cheaply

The best way to sharpen scissors is to save all of your used/discarded aluminum foil. Cut through the foil with dull scissors until the foil is in tiny pieces..Viola! Your scissors will be sharp! Good luck! Be sure to save one designated pair of scissors for paper Only, therefore the other pairs will not dull so quickly.

Cut through some sandpaper.

You might try googling the technique: sharpen your scissors yourself.