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Sometimes when I'm painting crafts and whatnot, the bristles of my paint brushes will fall out. I know the easiest way to fix this is to get better quality brushes, but since I don't want to completely waste the ones I have, I have a little trick to temporarily help with the bristles. 
What I do is take a little bit of Super/Krazy Glue and glue around where the bristles meet with the ferrule of the brush.
Then while the glue is a little bit tacky, I take pliers and crimp down on the ferrule and bristles. Once completely dry, I've found that I can go a lot farther with painting before I notice any more bristles falling out.It's always good to clean your paint brushes after each use but if you forget and the paint dries on the brush you still may be able to salvage the brush. Just soak the brush over night in cleaning solvent for the type of paint you used.
If you used water soluble paint, soak the brush in water. If you used oil paint, soak the brush in turpentine. The paint can should tell you what solvent should be used.Whether you're using oil paints or acrylics, inevitably your paintbrushes will take a beating. Even if you are doing what you're supposed to with the paintbrushes, they will inevitably become hard, stiff, and eventually useless.
