She was a huge female. Surprisingly calm considering that she was full grown when I found her. Never once tried to pinch or bite me. Here is a photo of a leaf bug I found in my yard last year also.. (I don't know the proper name for them)
I would suggest getting a few mantis'. Keep each one in it's own small kritter keeper. Once they are larger you should be able to tell the smaller males from the females. Then breed them.
The egg cases should be kept outside during winter. In a garage or shed. Then brought in when the last frost is over. Mist every day or 2. Then a LOT if tiny little mantis' will hatch late spring.
While the babies are so small they can only eat pinhead crickets, they are neat to watch. I would pick a few to keep in individual sauce cups with (like spiderlings) since they will cannibalize. Then release the rest in a field or wooded area.
They only drink water droplets from misting so a fake plant for adults to climb on and drink off of is all you need and a spray bottle. I would spray my mantis directly and she would drink the droplets off her arms.