As you’re thinking about your #20Time projects, try to include a goal that is measurable. For example, if you are creating a Vimeo channel to host your science-related videos, how many followers do you hope to gain? You should have both a short-term goal (gain 5 followers a week) and a long-term goal (by the time of the Symposium, I will have 50 followers).
A measurable goal can be achieved for almost any type of project if you think creatively. For example, if you choose to do the Google Science Fair, how far do you hope to make it? If you organize an adopt-a-block, how many participants do you hope to see throughout the day?
As always, let me know if you have any questions or any further suggestions.