I like to display my keepers on display boards and shadow boxes and lanyards hung on the wall. I like to SEE them! They make me so happy to look at when I'm just sitting at my desk or wherever.
I gather them by movie/character, and I expand as my collection grows. At first I had an Alice in Wonderland board, a Princesses board (for pins from Cinderella, Mulan, and Princess and the Frog) and a lanyard for Brave pins. Then I added a board for miscellaneous things like the character hats and shoes, and a board for all my favorite attractions, like small world, haunted mansion, and tower of terror. Oh and a board for ravens and crows. And a lanyard for Administrative Professionals Day pins.
I now have a large Brave board, a larger Alice in Wonderland board than before, a board just for Cinderella and another just for Princess and the Frog, a lanyard for Mulan (which is almost full now), a lanyard for Tower of Terror, a board full of Small World and Haunted Mansion (and I had to stop collecting Pirates), a big shadowbox of Administrative Professionals Day pins, the crows and ravens board and the board for hats and shoes and hidden mickeys.
In addition to that, I like to separate out sets that are special and I know won't change because I have them all. I have the Disney Gallery Alice in Wonderland pins that my best friend gave me in a separate shadowbox, and another separate shadowbox for the 2013 monthly posters pins (plus the Oswald Lucky 13 pin; 13 is a special number for me). I'm planning to do a shadowbox for the Small World Mystery collection if I ever get all of them.
I don't have a ton of traders so they're all in one pin bag/book. It's the kind with cloth pages, but it was REALLY hard to get pins in and out of those and keep them in straight rows, so I stuck coraplast in each page (the same stuff I make the display boards out of) and they work great. I've always organized the book by LE; oddly enough it was so that *I* could remember what LE the pins were! But I've been thinking about reorganizing my trade book by category before the next meetup I go to this weekend.
I've never been to one of the official Disney PTNs, but I have been to several pin gatherings arranged by traders. If you get the opportunity to go to one hosted by David (docfish2u) and Amy, like the one coming up in May at DLR, DEFINITELY go. The people are always friendly and welcoming at the docfishes' events!