Just wanted to let you ladies know about a hot air balloon festival in OP next weekend (Sept. 17-19). It's free admission, but proceeds (I guess from concessions & the $5 parking fee) benefit the Boys & Girls Clubs, American Stroke Foundation, and KC Hospice (where I work). There are kids' activities and concerts in addition to the hot air balloons.
The website is http://greatmidwestballoonfest.org/
My parents took me to hot air balloon festivals when I was a kid and I loved them. DS is obsessed with airplanes and balloons so I'm really excited to take him!
I was also looking on KC Parent mag's website and found a list of other festivals in the area this fall in case you are looking for things to do with your LOs!