I have done a row robin with three good friends who also quilt. That quilt is very special to me and does bring great memories of my friendships back when I look at it. We did it over about 8 months I think and we kept a journal of our thoughts and what we decided to do etc and why so that had special meaning also and is fun to read back on. I recommend you set yourself some goal to achieve. If it is new colour ways to work with it is a good exercise for that. If you want it to be more personal then do it with people you want to remember. I like the idea of a doll quilt swap that someone mentioned. Achievable in size and easy to post. Good luck.