I moved from Shawnee a year ago.
My favorite little secret nook was the Barker Road Access Park in Shawnee. It's off of Johnson Drive west of 435. There is a playground and restrooms in the front of the park (I like to shoot where there are restrooms available!), but if you walk down the path just a little bit, you will come upon a beautiful bridge and the path goes through some beautiful wooded areas. This area is really just used by joggers and bike riders, so not a lot of people around to get in your shot.
Spring:
Fall:


My other little favorite is Laird Park. I think it's in Shawnee, but may be in Merriam, and I think it's at Nieman and 55th. They have a beautiful park, restrooms, playground (nice for after the photo shoot), but the main thing is the beautiful rose garden. In the rose garden is a little roofed structure with pretty benches and to the side is just a huge green space surrounded by trees.



Good luck! I'm still finding places to shoot now that I've moved.