Nouns

(n)spiel, patter, line of gabplausible glib talk (especially useful to a salesperson)
(n)pattera quick succession of light rapid sounds“the patter of mice”, “the patter of tiny feet”

Verbs

(v)sprinkle, spit, spatter, patter, pitter-patterrain gently“It has only sprinkled, but the roads are slick”
(v)patter, pitter-pattermake light, rapid and repeated sounds“gently pattering rain”