walking on a wooden floor wearing soft slippers. Recording Tools MC-900-> TC SK48. http://www.reuven.nl/?page_id=106
Just underwater bubbles like diving or drowning
A 20,000 volt transformer arcing. This is a recording of an AC high voltage power supply arcing over.
Recording of a heavy sack hitting the floor from a decent height. Inspired by the phrase "down like a sack ...
Using a shotgun mic, these are the sounds produced by me while swimming freestyle