Turn myself into a Mimiga, then summon a bunch of Mimigas to help me become ruler of the earth. Not an evil ruler though. Such Mimigas include (But are not limited to); Sue, Chaco, Igor, King, and Kanpachi.
Err, Back on topic.
I'd make the most out of my 24 hours by not sleeping from Midnight to Midnight...
First Third of the Day: Photos. Lots and lots of Photos.
Second Third: Use my strength (Mimigas are strong, Right?) to beat up my enemies.
Last Third: Attract some girls. 'Nuff said.