Hiya soatb,

It would depend what you were interested in...pain, humiliation, depriving the sub of something, a journal, writing assignments? Or indeed what the 'point' of the task was, focusing help, reminding her of her submission during your time apart? i think possibly a combination of these would be to ask her to do a task(be it pain/humiliation etc related) and then asking her to write about it. i can go into that more in terms of personal experience if you're interested, but i won't bore you with it if you're not! Let me know.

There's some good existing threads on the subject of punishments in online/distance relationships:

Online Relationships (includes some good posts on writing assigments etc)

Online Training

Punishments

Humiliation Tasks

The task masters over at ST would likely have some very good ideas, but since you already know your sub, then you alone will know how to personalize the ideas to suit the both of you.

Hope this helps.

sl