My minds not that flexable unfortunately, starting a new task is a almost insurmountable undertaking... once i am going i can contuine for hours on end, often without worring about interruptions, but if not they go nowere, i have tried to jot down ideas quickly but it rarely goes anywere unless i get 400 words down at least
However, many of the storys or events i do make are built from fragments of failed ones, its often the primary storyline that gets doomed
and even writeing some ideas down fails, not that i have not tried, for tf or story things like this i usually have about an hour to 3 hour window to put serrious thought into it if it is going anywhere
Outside of that though i do have story elements written down that i work with for 1 or 2(1 really at the moment and a big dump file for the other one)