Mod to earn an area or time of creative build mode, within a survival session?

[Longrath]

The grind always gets me.

 

ex. building a big stone castle. Grind for iron, get stone cutter, then grind for stone.

 

I've always thought winning an area or time of creative mode would be good. For this and similarly for Space Engineers.

i.e. you get 150 stone and 100 core wood, and 100 wood and you get creative build mode in a certain area. Probably about the size of the workbench radius. Those numbers are probably low. but a good mod it would be configurable.

 

Is there anything like that?