What stood on either side of the gold lampstand in Zechariah's vision?

Answer: Two olive trees

Zechariah saw a solid gold lampstand with seven lamps, and two olive trees beside it, one on the right and one on the left.

““What do you see?” he asked. “I see a solid gold lampstand,” I replied, “with a bowl at the top and seven lamps on it, with seven spouts to the lamps. There are also two olive trees beside it, one on the right side of the bowl and the other on its left.””— Zechariah 4:2-3 (BSB)