Geigerbook

Geigerbooks are a recent invention by Geiger to help spread his Autumn High Memories fanfiction with fellow fans. On the surface, it appears to be a simple tan book with blank pages, but as you write on it, various commands will cause responses, and a graphical user interface can be installed. Depending on the software suites, geigerbooks have various uses, but common ones include the following:

Standard model: This standard GeigerOS features a word processor, a basic file browser, a chat program, a basic geigernet browser, and a file transfer mechanism. It is the basis for every other type of Geigerbook, and also includes GeigerBuddy.

Open Sourced model: Immediately after creating the Geiger book, Geiger had a nightmare about penguins, and decided to go create a penguin themed Geigerbook that has a lot more functionality, but is only usable by highly experienced wizards due to it's esoteric command-line functionality.

Merchant's guild model: This custom operating system is given to merchant guild operatives, and includes a stock reader, a secure connection to the merchant's guild forums and chat, as well as a number of math programs.

Black Market model: This highly modified version of Geigerbook has secure connections to the black market, a social network to hire various assassins and thieves, and a number of surveillence programs. Possession of a black market geigerbook is a serious offense.

Kids model: This Geigerbook was designed by Geiger during one of his Skumble trips. It features a number of annoying animations and songs about shark families, as well as easily bypassable security features to keep children from looking at anything outside of shark family dances.

Elderly model: This is a standard Geigerbook, but the text is much larger.