A big thank you to HUYA for the laser design. We tweaked it to work for a 3D printer (with some assembly required afterwards). It is very flexible and not jab-you-in-the-chin-y. Print all parts (I used "Separate Connected Surfaces" in our slicer program to print all parts in a couple batches). Next I looped masking tape on a long board and used a ruler to align all the pieces. Then I hot glued a piece of silver rope/cord down the center. A ribbon or string or whatever you have hooks it around your neck. Son wore it to a "high school spirit day" and got lots of cheers over it :-D Ha.