Idk if I posted this already but... NYDUS BUILDINGS!

The restriction for this Funday Monday is not allowing any structures with the exception of the spawning pool or hatchery/lair/hive inside your main or your natural.

This Funday Monday is limited to Zergs.

Some examples of how to do this - Mass Queen for VERY fast creep spread. Lair tech for overlords to crap out creep. Hatch cancel to place something down in the early game. 

This Funday Monday could be good or bad.

The good would have to do with the opponent not being able to see any of your tech structures and to react.

The bad? Good luck constantly rebuilding your roach warren, hydra den, or defending your evolution chambers.