Answer:
What comes once in a minute, twice in a moment, but never in a thousand years?
Hands she has but does not hold. Teeth she has but does not bite. Feet she has but they are cold. Eyes she has but without sight.
They're up near the sky, on something very tall. Sometimes they die, only then do they fall.
Two bodies have I, though both joined in one. The more still I stand, the quicker I run.
Has feathers but can't fly. Rests on legs but can't walk.
Keep doing me to avoid lens dryness