I have made an overview (PDF) of some of the LaTeX packages I use most, with accompanying small examples. The overview also includes some packages that are particularly useful to linguists.
A couple of years ago I implemented the game Hangman for Proto-Indo-European. It was really just for laughs and giggles after it had turned into a sort of tradition to play the game in real life with fellow students, during the breaks of courses in comparative Indo-European linguistics at Leiden University.
Actually the game above is only a small instantiation of the game I made: it only contains 18 words, reconstructed by R.S.P. Beekes. The Flash file, despite its laughably childish graphics, can be called with parameters that contain the display alphabet, transcription alphabet, and vocabulary list. For more information on these parameters, check the source code of this page. Other small instantiations of the same game for Ancient Greek and Gothic can be found through the menu.