This is part of my daughter's "little devil" costume from this past Halloween. I added a small LED to the tip of each and ran the wires down the internal channel to a battery that I taped to a 5/8" wooden dowel that the pitchfork was mounted on.

Print Trident_arm_1 and Trident_arm_2 two times
Print Trident_Center two times
Print Trident_tip three times
Glue the pieces together and mount onto the top of a 5/8" wooden dowel.

I used translucent red PLA at .15 mm with 2 layers

Optional: insert a small red led into the chamber of each tip (you may need to drill out the support material to make more room.) Run wires down the interior channels and connect to a battery. I used a 9v taped to the dowel with red duct tape.