Some recordings meant to work as the flapping of bat wings. To record this, i just used a plant with slightly leathery/plastic-sounding leaves and shook it a few times in front of a mic. Simple but effective!.
Leathery sound made from my keyboard pressing against clothing. Cleaned up audio to remove any unwanted noise. 3 other variations of this sound can be found within the "leather stress" pack. Recorded on sony pcm-a10.