You could take the extra money over the $12,000 and donate it to a charity that allows you to name something related to it.
It would go along with the donation spirit, wouldn't be a massive amount at the last count and would do something really special.
I'm not sure what there is in your area but in our University they are trying to buy a new grand piano for the concert hall to replace a 20-30 year old steinway
that costs £70,000 (I think I have the name right). If you donate enough they will name a key after you which would be in the concert hall for the life of the piano.
Maybe there is a hospital or hospice or other worthy cause being renovated near you that can have a donationcoder brick placed in it.
Take some photos, put them up then send them to the tech news agencies with a press release.
You might even get more visitors and donations because of it.