I employ all manner of various patterns into my playing using combinations of traditional Travis, as well as forward and reverse "banjo roll" styles, crosspicking, and more and more so including single string runs using a two fingered flatpicking style.

For the forward banjo rolls its a pattern that is 1-2-3-1-2-3-1-2 (where the thumb is 1; 2 is the index; and 3 is the middle finger.)

For the reverse banjo rolls the pattern is 1-3-2-1-3-2-1-2. (Doc and Chet use a lot of these forward and reverse rolls in their picking.) I like it because you can break up a chord with these patterns, and it makes what you're doing sound a lot more complicated then it really is. Just a matter of practising and finessing them.