Developing your own 23 Things for your library

I'm not sure what 23 things would best fit our library because we all have different things that all (or some) of us would like to put in. We might want to put one of the things like: how to use Microsoft soft ware, how to use our reference guides, how to look up ILL material and how to fill out the form to order what they want. We could put what different kinds of media equipment we use and how to use them. Honestly I'm not sure what other things we could put on our 23 things i would really have to brainstorm and talk to my other co-workers and see what they might want on it because we all work as a team in many ways.