We all love a good cup of tea, but the stains it leaves on our cups and mugs not so much. A way to rid that ugly, dark tint, without using harsh abrasives, is to place a few broken eggshells in your vessel. Fill with hot water and let sit over night. The eggshells are porous so they will absorb the pigments from the tea. All you have to do is wash as usual. No scrubbing needed!