Here is a heteroclitical collection of different audio networks that were found somewhat interesting.
These are networks that can be played with a MIDI keyboard.
Here is a network trying to replicate an electric guitar. Beware of potentially loud default settings!
Here is an attempt to replicate a barrel organ's sound.
Here is a chime-like setup:
This is a straight-out synthethic sounding sound not pretending to be anything else. However, it sounds somwhat interesting.