Since my research is related to multilingual dictionaries, I have the excuse of using this TikZ drawing of multilingual "thank you's" at the end of my presentations.
It had the advantage/disadvantage of distracting the audience enough from raising nit-picking, asked-just-for-sake-for-asking types of questions. :-)
If compiling this takes too long, the best way to use this is probably to use the result PDF directly via e.g. \includegraphics[page=1]{multiling-tq.pdf}
BTW -- can you spot the two fictional languages? :-)
The template aims at helping students working in the NuSTRAP group (University of Athens, Greece) prepare their thesis (PhD, MSc, BSc). It uses XeLaTeX and Babel packages to facilitate the use of Greek language.