I just wanted to show what my home made paper bokeh shape filter looks like. I used simple children’s construction paper and cut a small heart shaped hole in the center of a circle that is the same size of the rim of my lens. I used electrical tape to secure it in place. (We have a never ending supply of this tape cuz my G-hub is an electrician!) You can make the hole what ever basic shape you like. I cut mine freehand because it’s at least 100km to the nearest craft store, but I think punches used in the fine art of scrapbooking would work beautifully, and I’m sure they come in many shapes.