Random encounter idea - Ruby eyed skeleton
Your players traveling to a remote village. It is late after dusk and the road is surrounded by nothing but trees and bushes. Suddenly your party can spot a skeleton with two massive rubies in his eye sockets sitting on a tree stump. There is a small table in front of him. In each hand, the skeleton holds a six-sided die. When characters approach him, he springs to life.
“Play with me the game of dice!
If you win you get one of my eyes. “
Saying that puts both dice on the table and waits for the character's decision.
If any of the characters grab dice, the skeleton points at their eyes and says:
“If you want to play I warn you then,
If you lose I take one of them.”
If you players decide to play and win, they receive a ruby worth 1 thousand gold pieces. If your players decide to play and lose, the character must give up one of their eyes. There is no trick to the game. First character rolls both dice, then a skeleton. Whoever rolls higher wins. A simple game of chance. If your characters lose and decide not to give up the eye skeleton says:
“ I clearly see you want to brawl.
You ain't gonna give me one. I'll take them all.”
A group of one hundred angry skeletons appears around them and attacks the group on the spot. Each of the skeletons has only 1 hit point.
I made a video version of this as a YouTube short. I needed to cut 30% of it to fit YouTube short limists tho.