What would you prefer your collection to look like next month, next year and in the forseeable future. It is probable that the collection has grown up over a period of time inhibited only by time, money and the availability of collectable artifacts. However, even if it has been accumulated with definite goals in mind, re-planning can only result in improvements. Your particular areas of interest are of primary importance in determining the future course of your collection. Perhaps you have lost interest in a certain craft, and tools of that trade could be reduced or eliminated completely to allow for expanding an area of greater interest.
Space is quite often the limiting factor in the growth of a collection.
It is obvious that a collection to be housed in a bottom desk drawer should not contain very many blacksmith anvils. However, many collectors refuse to face up to a permanent space limitation and therefore seriously overload the available space. The more unique the item, the more space it deserves in a display. It is recommended that you take a critical look at your collection in relationship to the available space and tailor the size of the collection accordingly. Creating a craft shop of some give period would require many common tools and artifacts whereas a different type of display might prompt you to collect only the unique tools of the trade.