How about a "boot sale"? You'd need a business to let you use their parking lot. People sign up to have "miniture yard sales" out of their car trunk (boot). You charge $5 or $10 for a trunk, or $10 or $15 for a truck bed. Their sales profits are theirs.
Or how about a raffle? Ask local businesses to donate goods or gift certificates.
Tis the season for Charity! No doubt you will be going to a lot of parties. See if you can do a silent auction for her at one of these parties. what you will be auctioning off is her services as a maid for maybe a day. Explain to party guests ahead of time what the cause is for and maybe they will pay top dollar for a house cleaning..
Or you can silent auction a donation from a local buisness and have proceeds go to her.
or if you like organizing things amybe hold one of those events where you auction off people as dates for a day. I can't rememeber what it is called but those are always fun..
Well thanks for giving something to think about besides work today! maybe i will have more ideas later..