The rules are simple — take up to half, replace what you take one by one (or add MORE than you take, there’s no rule against that), and send it to whoever the moderator says. You’re also allowed to list things that are specifically to be held for somebody further down the line.
One very kind member of our swap crew from Fix-It Phil (at http://tinyurl.com/FixItPhilNE on YT) put a GameBoy DMG-001 inside. It brought a tear to my eye because I haven’t had a working DMG-001 since I was young. Subscribe to mmf187 to not miss future video game content!