Fort Collins will be having one. I imagine that Denver will have one or two themselves.
I'm still debating whether it will make a bit of difference to go to the Fort Collins one.
If I do, I'll probably take the images in my sig line and use my plotter (24" wide by 150'-0" roll if necessary) to print them up, then stick them on poster board
I may be getting a job soon; if not, I'm going.
Submitted some suggestions late last night and already picked-up votes:
4 Fund the Military - At Least They're Good At What They Do
3 I Bought What?!
3 If Only Obama Would Bow to the Constitution
3 If We Give You Money, Can We Demand Your Resignation, Too?
2 If You've Already Spent Your Allowance, Don't Come Asking for More
8 The Constitution: the Other Document They Never Read

2 Those Who Can, Do - Those Who Can't, Nationalize
I had some others that didn't mke the cut, i.e. BOHICA, using the stylized Obama "O".