I gathered black paper, a circle punch, and a star punch.
The circle punch is a just a little smaller than my lens cap.
I punched the star as close to the center as I could get by eyeballing it.
I could have measured and marked, but I was just experimenting.
Before I went any further, I decided I should test it out. If it didn't work I didn't need to continue making the rest of the bokeh. And...
It worked! Yay!
It's not the prettiest, but this was a trial run. :)
Here are the shots I got while testing it out.
I just found this tutorial doing one more search on bokeh. How helpful would that have been before I did this!