Portable oil heater being dragged on its plastic wheels across a (slightly gritty) tiled floor. Close mic with tascam dr100. Cleaned up a bit (light compression).
Small change being rattled in a tin container, then dropped on a wooden floor. Recorded with coincident cardioid small diaphragm condensers through m-audio octane preamp and rme hdsp multicace soundcard at 48khz 24bit.