Chantrel made a pair of sai for a costume.
“This was my first try at making any sort of prop. I made these for a convention I’m going to. The base is coat hangers and duct tape and then I covered them top to bottom in InstaMorph for added shape, stability, and paintability! This stuff is seriously amazing. The picture with the mask is one of the sais [sic] before it was painted (the only picture I snagged of them)”
As you can see from the photos, the paint job turned out really well. The base of each mock weapon was wrapped in duct/electrical tape for added grip and aesthetics.
Maybe the costume is Raphael from the Teenage Mutant Ninja Turtles? Probably not, but one can hope (and age themselves by hoping).