The one on the left appears to be a sword, and the one on the right... I have no idea.
(Picture from TOS 1x08, Balance of Terror)
These do not look familiar to me - especially the triangular one. Were they random designs made for this set, do they come from a real religion, do they have some meaning in-universe I know not of?
Here's a better shot (same episode & scene) of the one on the left (Kirk's right, in the first picture).
- This question includes further uses later on - I'm not asking about the era this episode was made.
- I'm primarily looking for TV/movie usage, or something like an interview (quite a long shot there, though) - being visual, novels are unlikely...