I realy wanted to make some of my map ideas:
DM-NukeSilo
Name says it all, dm in a concrete bunker, and for fun, launch or det the icbm.
DM-TimeTravel
3 similar rooms side by side, one mideval, one present, and one future, and have portal like things to trave from one to another
(perhaps even a mute to use different weaps in each area, I had the whole thing planed out)