Create A Node Group From Math Expression :
I.e. sin(x + 0.1 * y) + z * 2.0 is converted to:
Straighten Vertex Path:
Rather simple but I did not find a tool like his. Might be integrated somewhere. Spacebar-Menu -> Straighten Vertex Path
View to Poly:
View a polygon from above along its normal and align an edge with the x-axis of the screen. Useful in combination with the knife-tool.
Run scripts from the Text editor in the console and reset it if you want to.