Don't send me money!

I am generally a mild mannered easy going kind of person but I do have a few pet peeves and one of them is receiving a letter from a charity asking me for money while enclosing money to me.  Usually it's a nickle but sometimes it's a check for one or two dollars which I'm encouraged to endorse and send back to them with an additional donation.  Those I shred.  The coins I save and add to donations I make to the children's coin collection at church each month
I do give to several charities but not if they send me money.  I figure if they can send me money they don't need mine.
What I would really like to receive from a charity would be a simple, short letter explaining how they spend the money they receive and what percentage actually goes to help people and what percentage is spent administrating (including mailing out pleas for more money).

PS I don't need greeting cards, blankets or return address stickers either.