Dry Erase Away Poorly Placed Permanent Marker Marks
Ever accidentally use a Permanent Marker on a Dry Erase board, or ever wanted to edit something you "Permanently" wrote, like a label on a container? There's an easy fix! Use a Dry Erase marker to rub it out! Then, just erase the Dry Erase with a cloth, or that eraser thing that came with the markers that you always loose. Get the fatter "chisel" type markers. Their broad footprint makes for quick erasing, like the fine point kind just can't (unless your aim is to do some delicate, detail erasing).
This works great with dry erase boards and anything with a smooth, nonporous surface, but not so well on things like paper, cardboard, unfinished wood, etc.
Now you'll never again have to replace that expensive whiteboard or be at the mercy of permanence — at least on surfaces that this works on. And, if you can't put your hands on a Dry Erase Marker, nail Polish Remover works just as well (best if it is pure Acetone sans "strengthener" or "moisturizer" — but if that's all you got, do a test, first). Not sure if the odorless kind works, though. But, Lacquer Thinner does work -- but, definitely test lacquer thinner before using it, especially on plastics — that stuff is a powerful solvent!
WARNING: if the surface is something other than a Dry Erase Board, probably good to first do a test on a small, unassuming area -- especially on plastics -- that way you won't end up with an even bigger, truly permanent mess!