miscellaneous
雑 centers on a mixed, unorganized collection of things: miscellaneous items gathered together without a single unifying theme.
雑 is the modern simplified form of 雜. The older form combines 衣 (clothing) with 集 (gather), suggesting a collection of mixed things. The modern left side 杂 is a simplification.
The left side 杂 looks like a jumble of strokes, and the right side 隹 is a bird. Imagine a bird's nest made of miscellaneous twigs and scraps all mixed together.
For ザツ, imagine a zany cat (ザツ) knocking over a box of miscellaneous items, scattering them everywhere.
magazine; journal; periodical
complex; complicated; intricate; mixed (feelings)
rough; crude; sloppy; messy
chatting; idle talk
miscellaneous goods; general goods; sundries
congestion; crush; crowding; jam
small fish; small fry
weed
rough (estimate, summary, etc.); broad; general; sweeping; loose
noise (usu. unpleasant)
miscellaneous knowledge
hybrid; crossbreed; mongrel
chores; odd jobs; miscellaneous affairs
miscellaneous; mixed; unorganized
house-cloth; dust cloth
complex; intricate; complicated; confused; troublesome; vexatious; cumbersome
microorganisms; saprophyte; saprophytic bacteria
omnivorous
rice gruel containing vegetables, fish, etc., and seasoned with miso or soy sauce
miscellaneous notes