Pretty self-explanatory. When opening the crafts tab, either from the main menu or from the designer via "Load crafts", have the ability to create folders where you can store crafts, so that the crafts tab doesn't seem cluttered with craft saves. For example, I would have a folder for planes, tanks and boats. You could also add sub-folders into these, so for example I could have a replica sub-folder and custom sub-folder for each of the main folders.
