Whisk

Bartwisch

(small handheld broom with a small (or no) handle)

Handbesen

(small handheld broom with a small (or no) handle)

Handfeger

(small handheld broom with a small (or no) handle)

Schaumschläger

(kitchen utensil — see also egg whisk)

Schneebesen

(kitchen utensil — see also egg whisk)

verquirlen

(in cooking, to whip e.g. eggs or cream)

wischen

(to move something with quick light sweeping motions)