SCP-1193 - Buried Giant: Underground arm which extends deep into the earth through a drainage pipe, with evenly spaced elbows.
SCP-2083 - Hoboken Bunion Emergency: A room full of feet that kick people to death and steals their shoes.
SCP-1993 - "Your Leg": A leg that viewers become convinced is theirs, and remove their healthy limb to attach the fake one.
SCP-1673 - Friendly Graveyard: Human limbs made of dirt come out of the ground and attempt to befriend people in this graveyard, often with disastrous results.
SCP-262 - A Coat Of Many Arms: A coat that has arms from all sorts of dimensions pop out and do arm stuff. Owned by The Administrator.
SCP-1930 - The Surgeon in the Box: Emaciated arms come out and treat people with injuries placed around it.
SCP-072 - The Foot Of The Bed: Causes a black shadow arm that is recognizably based on a human extremity to emerge from under a bed, and attack the sleeper.
SCP-437 - Woodcutter's Axe: I'm a bit iffy on this one, but it does cause an anomalous effect where the limb withers up immediately after being cut off.
e: There are probably more, if this number isn't sufficient I can go get more examples. This was found with a cursory search/my own memory of limb SCPs.
