The crazy amazing thing that is the lantern shield. It feels so much like a hyper-fictional invention, bristling with sharp bits of a (retractable?) sword, a gauntlet with spikes for weapon trapping, a pointy bit on the shied for bashing, and, yes the titular lantern to dazzle your opponent in the dark. And yet, it was an actual thing, with writeups in fencing manuals and everything.
Kung Fu clearly doesn’t hold the patent on odd weapons! (And like many of those, how much the lantern shield was used in practice is perhaps very little…)