Schreibwarensucht?
[The title of this post was originally "Schreibwarensüchtigkeit?" but, after talking to a native speaker, I decided to change it to what you now see above. Whether more correct or not, the word that's up there now both looks and sounds better. Both words mean "stationery addiction."]
This is what's in my pencil case: 
- Lamy Safari fountain pen
- Sharpie permanent marker
- dry erase marker
- chalk in holder
- red Pilot G-2
- green Pilot G-2
- Rose Art 2HB pencil
- Mirado Black Warrior 2HB pencil
- Pentel Quicker Clicker mechanical pencil
- Stabilo GREENlighter
- Lefty mini-ruler
- 2GB USB stick
- eraser that hit me in the head 20 years ago
- Dux Precision Sharpener
- metal ring
- paper clip
The oldest thing in the case is the eraser, which, as mentioned, hit me in the head in a German classroom some 20 years ago. The newest thing in the case is the Dux Precision Sharpener. It is brass, and has three sharpness settings. It is awesome. It is my new favorite thing.