Legs for arms, arms for legs, feet for hands, hands for feet, mouth-pussy/anus swap, face-pussy/chest swap, inverted body, rearranged/upside down face etc. Some multi is acceptable.
I remember there was this thread on the old gurochan
The dA group limbtranslocations and pixiv users 紅天狗きの (Nanacatl) and ぼるせん are full of these. Wanted to find more.