I completed conversion of a Harbor Freight Tool Box (thanks to FPGeeks!) and, as I tried to figure out which pens would go where, I gained some new insights into my 'habit' of amassing pens! here is the short list of my pens' characteristics: "Pretty" or works of art....maki-e, hand-made, one-of-a-kindgifts, souvenirs,sentimental varieties of filling mechanismscheap and utilitarian"interesting" or "curious""cute" (little pens)I do have mostly modern, but a few vintages fit the categories, as well. Some, obviously, fit more than one category. I have not focused on any one brand, country of origin, or manufacturer. I use all my pens...none are so-called COLLECTORS that don't get inked! Nib quality is a consideration, but can be fixed, adjusted, or replaced. Overall performance is a consideration, so I rely on all of my FPN and FPG and Posse for reviews. one more observation, I can justify absolutely ANY new purchase by sticking to my criteria! How about you? How would you describe your collection's characteristics?