In situations where you want to get a bokeh like effect to a significantly weaker degree than what an actual lens will give you, you can rely on the adjustment brush in Lightroom. To do this, all you need to do is create a custom brush setting with the sharpness and clarity all the way down. Then you brush it onto the areas that you want out of focus.
To make it even stronger, click on done and then add another layer.
Big warning though: this doesn’t work with every photo, but it can work a lot of the time.
More image samples are after the jump.