Product: Pen
Erasable Highlighter   (+6, -1)  [vote for, against]
For erroneous highlighting

Highlighters a great. You can use them to mark out areas for a multitude of reasons, however I sometime find I have gone a little over the top and have started highlighting areas that need no highlighting.

To compensate this I need an erasable highlighter. You can buy ink erasers for fountain pens so why not have a highlighter that has a cap on the back end that contains the eraser?

On a very basic level you could simply water down fountain pen ink so it comes out as a light blue. This can be erased with a normal ink eraser but work should be done on including other colours aswell.
-- miasere, Aug 16 2007

Erasable Highlighter Tape http://www.epinions...ontent_252878622340
Erasable Highlighter Tape [drememynd, Aug 16 2007]

Highlighter Pencils http://www.internat...ters/9503501172.htm
I don't actually know if these are erasable, but it's one step towards it. [drememynd, Aug 16 2007]

perhaps another coloured highlighter that reduces the first colour back to white - I have no idea what I'm talking about...
-- po, Aug 16 2007

I think these may already be baked, if not as tasty as one would hope. See links.
-- drememynd, Aug 16 2007

i like [po]'s suggestion. one end highlights, other end chemically alters highlighting to "disappear."
-- k_sra, Aug 16 2007

An un-highlighter?

If you un-highlight something that wasn't highlighted it becomes less important.......
-- evilpenguin, Aug 16 2007

hehehe. ostensibly so. or you might have just lo-lighted something, giving it ambiance. (bun because today is my birthday and i'm having a jolly good time goofing off at work)
-- k_sra, Aug 16 2007

My daughter has these. Brightly-coloured felt-tip pens and, in the other end, there's a sort of "anti-pen" which makes the coloured ink vanish by some cunning chemical reaction.
-- MaxwellBuchanan, Aug 16 2007

This reminds me of potatoes.
-- skinflaps, Aug 17 2007

that's a conversation stopper if I ever heard one.
-- po, Aug 17 2007

//This reminds me of potatoes. ~skinflaps, Aug 17 2007//

ah, remember [AO]'s reusable zipper jackets for baked potatoes? [skinflaps] reminded me of them just now... <reminisce>
-- k_sra, Aug 17 2007

This reminded me of the invisible ink trick I used to play with as a kid - potatoes.(Sorry hijacked your idea, ignore me)
-- skinflaps, Aug 21 2007

random, halfbakery