Put her in the chairman's seat for the RNC. Not that I'm complaining about the job that Priebus is doing, but the position could be improved greatly by putting in Sarah Palin.
For starters, the job requires major fund-raising skills and talents. Reince Priebus has done a fairly good job at this end of things, but compared to what Palin has been doing, he's Dell computers and she's Apple. She's gangbusters at getting people to join up and sign checks for the party.
Second, the GOP needs a lightning rod, because the media will be almost as eager as the DNC and Obama to smear the Republican candidate, and if the RNC head is there to draw attention, it's better protection for their man (I'm not being sexist, I'm just assuming that Bachman is not going to stage a huge comeback, at this stage) and his running mate. When Sarah Palin appears, the media dogs salivate as though a bell had just been rung in their ears or a squirrel chittered in a nearby tree.
Let her do as much damage to their (and the DNC's) credibility as is humanly possible, while allowing the party to outflank the opposition. And, give her the title and paycheck to make it happen.
It's a darned shame the Republicans haven't taken full advantage of the gifts Palin has. She would be awesome if officially let loose on the Dems.