Frugal Quick Tip: Permanent Marker

Use those free permanent markers you may have gotten recently at Target (or elsewhere) to spiff up your wardrobe a bit.  I've used them on these black earrings to cover up spots where the paint has chipped.  Use a black permanent marker if you get a bleach stain on a black shirt.  You could also use them on scuffed black shoes.  What have you repaired using a permanent marker?