The hand of Eldrad (TV: The Hand of Fear)
A hand was a body part.
A handshake was an "old Earth custom" which entailed the clasping of hands between two people, generally demonstrating friendship. (TV: Planet of the Daleks)
Dido sand beasts had hands and feet with claws. (TV: The Rescue)
One type of Dalek mutant was described by Ben Jackson as a "sort of disembodied hand" with a claw. (TV: The Power of the Daleks)
Autons had deadly weapons concealed inside their hands. (TV: Spearhead from Space, etc.)
To demonstrate the cause of the stalemate of the Dalek-Movellan War, the Fourth Doctor and Romana played a game involving hand shapes forming "stone", "paper" and "scissors". (TV: Destiny of the Daleks)
Eldrad's hand landed on prehistoric Earth. It was uncovered in the 20th century and controlled Sarah Jane Smith, using her to help him regrow his body. (TV: The Hand of Fear)
After the Dummy Massacre on 26 March 2005, people vowed to boycott shops with dummies, but soon went back on their word, although the shops did remove the hands of the dummies, a glimmer of acknowledgement of the attack that had unfolded not long before. (PROSE: The Doctor Was Involved in the Dummy Massacre [+]BBC webteam, Who is Doctor Who? (BBC, 2005).)
In an interview hosted by Mickey for his website in early 2006, Henry Van Statten recalled the experience of having moondust — alien grit — run through his hands for the first time was "ultimate", as he could not physically travel to another world despite his interest in aliens. (PROSE: Henry Van Statten [+]BBC webteam, Who is Doctor Who? (BBC, 2005).)
The Catkind had five-fingered hands with retractable claws. (TV: New Earth)
The Abzorbaloff had hands with three clawed fingers, which exposed him as alien to Ursula Blake and Elton Pope when he attempted to hide behind a copy of The Daily Telegraph newspaper. Ursula was absorbed into the Abzorbaloff's body when his hand grabbed her arm. (TV: Love & Monsters)
The Tenth Doctor's hand in a container. (TV: Journey's End)
Immediately following his regeneration, the Tenth Doctor made sure to check that he still had, among other things, two hands, noting a "slight weakness" in the dorsal tubercle of his right. (TV: Born Again) This hand was cut off during a sword fight against the Sycorax leader. (TV: The Christmas Invasion) Jack Harkness later retrieved the hand and returned it to the Doctor in a jar in the year 100 trillion. (TV: Utopia) Later, when forced to regenerate, he healed himself and channelled the excess energy into the hand, a bio-matching receptacle. (TV: Journey's End) After the Daleks captured the TARDIS, they attempted to destroy it. Still inside during this apparent destruction, Donna Noble touched the energised hand's container. The regenerative energies within the hand combined with Donna's human DNA. The force of the reaction shattered the container, allowing the creation of the "Meta-Crisis Tenth Doctor". (TV: Journey's End) When the Thirteenth Doctor regenerated, her successor realised that he had taken on the form of his tenth incarnation by checking his hands.
A sign reading "Now wash your hands". (TV: School Reunion)
A sign in a classroom at Deffry Vale High School where the Tenth Doctor temporarily taught had a sign with white text over a blue background, reading "Now wash your hands", with an illustration of hands under a running tap. (TV: School Reunion)
The Thirteenth Doctor's hands were noticeably smaller than her predecessor, causing the ring that he had worn to be released and fall to the TARDIS control room floor upon his regeneration. (TV: Twice Upon a Time)
When the Thirteenth Doctor visited Villa Diodati in June 1816, a bony hand of a human skeleton possessed by Lord Byron mysteriously came to life and started attacking people. (TV: The Haunting of Villa Diodati)
There were two known resurrection gauntlets, one for the right hand and one for the left. (TV: Everything Changes, Dead Man Walking)
The Doctor had a habit of holding the hands of the people he was leading to safety. (TV: The Night of the Doctor, Rose, The Witch's Familiar) He was protective of this habit, the Eleventh Doctor protesting when Clara Oswin Oswald grabbed his hand to lead him to safety. (TV: The Snowmen)