In working with customers over the past couple of weeks, I've found myself suggesting one feature over and over that I think we often forget about - Append Only. No, I'm Serious! The append/prepend is such a cool function that gets overlooked.
I use append with a text or text multi-line field especially in situation where I want a dialogue between multiple people (think Q&A between team members on a specific task). The date and person stamp makes the audit trail easy. But did you know that you could also use an append field with a Multiple Choice field? Each time a choice is saved, the date and person is again stamped and you get a running history of selections. I've used this recently with a customer who needed to track the status of tasks with lots of different people touching the records and making changes. They needed a visible history and the append function worked well.