Does anyone know of any organizations in the Kansas City area looking to do a fundraiser?

Contact a local hospital. If you can, try to get people to pay a certain fee to play games with hospitalized kids. Split people up in teams and have prizes for each game won. You could do games like scene it, family feud, charades, and that game where someone on a team draws a picture and the team has to guess what it is as fast as they can in a certain amount of time.