I found an interesting four patch here: http://round22.blogspot.com/2012/07/disappearing-4-patch-with-twist.html .
There are complete instructions on how to make it on the link, but here’s my quick version.
Here is my four patch with 2″ from the corner marked on all sides.
Here it is again with four cuts, cutting from one mark to the next. You have to be careful, handling and sewing these pieces, since each cut has a bias edge.
I’ve rearranged the pieces and sewn them back together. I think this one is really interesting. It looks way more complicated to make than it really is.