Quick Tip for a Dreaded Mishap

We've all done it--pricked a finger with a needle or a pin, and left a drop of blood on our project.  Don't panic!  Dip a cotton swab in some hydrogen peroxide, and press the stain 3 or 4 times.  Gone, like magic.  Of course, test on a scrap first, but I've never had this method alter color.  The old wives' method is to use saliva as a solvent, but saliva proteins will darken over time, and a stain will mysteriously appear at some point down the road.