I've touched on, a few times, things God is incapable of, which I like talking about because the more I think of it, the more it shows His power and love, despite the way the statement may even sound.
I figured, just as a thinking exercise, as an opening to discussion, and as a way to even reflect on who God really is, instead of listing what God can do, let's list the things He cannot do.
For example:
God cannot force love toward himself. Love, by definition, is freely given, and this is why our love for God is not only voluntary, but His love for us is too.