Castanets

Hollowed pieces of flat wood, clicked together. The orchestral instrument generally has handles. Beaters: Hand.
Of course, castanets are associated with Spanish flamenco music.
Castanets:
Flamenco 'flam' stroke:
Pattern

Guiro

Latin American instrument, made from a hollowed gourd with a serrated shell, which is scraped longitudinally.
Beaters: Scraper.
Guiro:
Even pattern
Uneven pattern
Two stroke
Three stroke
Up and down

Vibraslap

This mimics the sound of a rattled jawbone, or quijada. It comprises a a small box attached to a U-shaped metal handle, with a wooden ball at the other end. The player strikes the two together, and the resulting vibration shakes small free-moving rivets in the box.
Beater: Hands.
A long sustained rattle to the sound, which can nevertheless be damped.
Vibraslap:
Undamped
Damped

Woodblock

A hollowed out piece of wood (or plastic). Woodblocks come in varying sizes.
Beater: Most beaters work on woodblock, including butt end of snaresticks and even triangle beaters (if played quietly).
Woodblock:
Pattern