I was thinking about doing a simple long-term project, and my idea is this - create a large dungeon for use with Basic Fantasy, draw the maps with Microsoft Paint using a square-type background and just add to it room by room as I go along during lunch breaks and what have you. I could use the generator tools on the Basic Fantasy website (http://www.basicfantasy.org/). Build and build until I have a huge dungeon covering player levels 1 to 10, and then stick it all in a PDF and give it out. If it gets good feedback, then adapt it for other systems using the same format, see where it goes from there. I was thinking about doing the Island Tomb from my Stormland SKETCH game setting at http://www.farsightgames.com/. That's huge!
Could I last? Will I create something huge or will I just get bored by room 4 and think, 'Ah, screw this!'