I created something similar to what is found in the Internet to create artistic bokeh or bokeh with different shapes aside from the common circular, pentagonal, octagonal shape of bokeh. By the way, I also read from the Internet that the bokeh is also affected by the number of aperture blades the camera lens has but I can't recall where I have read it exactly from.
Anyway, back to creating different bokeh shapes was something interesting and I tried it myself on my kit lens. Basically, it's like overriding the default bokeh shape of the lens. With the Christmas season, I took the chance to create and experiment on this one as there's a bountiful resource of light points from Christmas lights.
Here's my best photos:
Here's my do-it-yourself interchangeable bokeh accessory that yielded the above photos:
Here's a link for my inspiration to create myself a bokeh accesory: DIYPhotography. Thers's more DIYs in there to try as well.