I think it is natural to think that as we "grow" in anything be it quilting, scrapping, and any other activity ..when we see something from the past we may think we need to "improve" it in some way but I think that is part of the growth process and I think they are just friendly reminders of how much we change and get better ...so I just leave them....in a few years our current projects will seem like they are outdated or bad compared to the next now....so why go back in time?