Can I say,
(a) The rain drops /dropped into /in the pail.
(b) The ran water / rainwater was collected in a pail.
(c) We collected the rain / raindrops in a pail.
(d) The rain / rainwater is in the pail.
(e) The rain fell into the pail.
(f) We can collect rain / rainwater using (/ in) a pail.