No stylus or anything, but for only 50 cents? I'll take it!

the nib doesn't do much, the styluses are specific to each tablet/range of models:

Wacom tablets use electromagnetic resonance technology.[36] Since the tablet provides power to the pen through resonant inductive coupling, no power is required for the pointing device. As a result, no batteries are inside the pen (or the accompanying puck), making them lighter and slimmer.

Under the tablet's surface (or LCD in the case of the Cintiq) is a printed circuit board with a grid of multiple send/receive coils and a magnetic reflector attached behind the grid. In send mode, the tablet generates a close-coupled electromagnetic field (also known as a B-field) at a frequency of 531 kHz. This close-coupled field stimulates oscillation in the pen's coil/capacitor (LC) circuit when brought into range of the B-field. Any excess resonant electromagnetic energy is reflected back to the tablet. In receive mode, the energy of the resonant circuit’s oscillations in the pen is detected by the tablet's grid. This information is analyzed by the computer to determine the pen's position, by interpolation and Fourier analysis of the signal intensity. In addition, the pen communicates information such as pen tip pressure, side-switch status, tip vs. eraser orientation and ID number (to differentiate between different pens, mice, etc.). For example, applying more or less pressure to the tip of the pen changes the value of the pen's timing circuit capacitor. This signal change can be communicated in an analog or digital method. An analog implementation modulates the phase angle of the resonant frequency, while a digital method is communicated to a modulator that distributes the information digitally. The tablet forwards this and other relevant tool information in packets, up to 200 times per second, to the computer.

/r/ThriftStoreHauls Thread Parent Link - imgur.com