Is there a way to include (or "inline") raw image data or pdf data inside the tex document itself, such that it becomes stand-alone? Something like this:
\inlinedata[base64]{theimage}{AJDeafg82asd34z8BNFKW(...more base64...)SKJWKUFr=}
...
\includegraphics[width=0.5\linewidth]{theimage}
That would sure come very handy for some super-portable documents, where two or three small external images would too easily get lost. (Please try to keep the lectures why external resources are always so much better as brief as possible ;)