I was recently playing The Black Mirror and one of the earlier challenges is a jigsaw puzzle where you have to reconstruct a torn up photograph.
The player clicks on a piece to activate it, then they can move it around using the mouse or right-click on it to rotate it to one of four preset rotations. They click again to release it. When a piece has the correct rotation and is near the correct position, it snaps into place, which works as visual feedback that it has been placed correctly.
It was an enjoyable break from the exploring and it got me thinking about how I might add it as an optional mini-game type in my adventure game engine.