noun:

• disco dancing with synchronized arm motions

~と adverb:

• falling in (large) drops (e.g. rain, hail); sprinkle (e.g. rain, salt); pattering; clattering (e.g. hail) - onomatopoeia
• flipping through a book; thumbing through a book; riffling cards - onomatopoeia

~と adverb / adjectival noun:

• sparse; scattered (e.g. clumps of grass) - onomatopoeia

~と adverb / ~の noun:

• crumbly (e.g. tofu, cheese, non-sticky rice); loose and falling apart - onomatopoeia