Just the random stuff I wrote one day or the other, so it is more like a reminder for me how to deal with certain common issues, but maybe it is useful for one of you as well.
Building an Cloud App using oAuth and REST based on the Django (Python) Framework, running on the Amazon Web Services.
One of the few designs I personally developed and frequently used for user communication. Example: http://www.student.uni-kl.de/~jjanssen/info-box/
Simple implementation of the Nagel Schreckenberg model visualized in Gnuplot.
Simple game of life realisation in C++ including several demo structures for basic understanding, with the main focus on the simplicity rather than the speed of the program.
Illustration of the 1D and 2D fourier transformation, with examples given to motivate the basic relations in fourier space. (comments in german)