That man was just incredible, you need to check out his website. It’s in English and there is lots of very interesting concepts, audios & videos.
It was amazing how he turned things of everyday used into equipment making sounds. Even the flash of your DSLR or mobile phone could make some sound through a kind of open microphone.
You tell you how good he was, the place was packed with people all the time.
[...] Krzysztof Arszyn Topolski, a sound “designer”, was not to be missed. [...]