I like this tutorial because I think you can do some intersting things with it. Its a really good idea.
Tutorials to Try
The three triangle tabs and rubberband work very well together. This design…
Heart shaped light blur photography
How to achieve Christmas Light bokeh in the background of a portrait by lalakme, via Flickr
Photos - Projects & Tips
Interchangeable slides, so you don't have to make an entire lens hood for each shape.
the 50mm is a great lens for holiday bokeh (and other beauty shots)
CG Blog Images & Posts
Freebie Alert! Bokeh Lens Covers To Win The Holiday Photo Game via Brit + Co
Take a Picture
Bokeh Lens.... Yes Please
Lights Camera Action
How to make a camera lens. Bokeh Lens - Step 13
How to Make Shaped Bokeh