One thing I frequently do in OmniFocus is to add an action group, that is a task with a series of sub tasks. Action groups are flexible because they can be turned into projects if necessary, or be a series of tasks within a project.
The Workflow works by asking you for the main task, then it asks for the sub tasks. Each sub task is indented (and has a dash added in front of the name to make it TaskPaper friendly), and then the whole lot is put into my OmniFocus inbox.
Exact Workflow Steps:
Ask for Input: This is the main task.
Text: Add a dash before it - which in TaskPaper makes it a task not a project.
Add to Variable-
Ask for Input: Ask for the sub tasks.
Split Text: Turn this into a repeatable item
Repeat with Each- go through the sub tasks.
Task List. This makes sure we get the main task too, the output of the repeat loop would just be the sub tasks.
Combine Text: Put the action group together.
Add TaskPaper to OmniFocus: Everything goes into my OmniFocus inbox.
You can get the workflow here: Add Task & Sub Tasks To OmniFocus.