When the object is placed on a non-flat axis, it's very hard to align it perfectly by eye
alignEdge is a tool to help align objects to the closest edge and snap to face normal.
map hotkey and combine it with instanDrag and spinNInty,
it is so easy to place objects on a surface.
instanDrag + alginEdge + spinNinty became one of my favourite tools in 2022.