I've just spoken with Brian Koon at Nighthawks Coffeehouse in Mission, and they have graciously agreed to host the first Hack Day. Note that I said "first", as I intend to have more.
So now, the details.
WHEN: Saturday, 15 March 2008, starting at 10:00, and lasting until the last geek goes home. :)
WHERE: Nighthawks Coffeehouse, 5815 Johnson Dr, Mission, KS
WHAT: Hack Day! A chance for geeks of all sorts to get together and hack on their ideas
COST: FREE! Although donations to help defray promotional costs, and to put on a subsequent BarCamp, are greatly appreciated.