How about a Geiger counter synth module? Nuclear Decay was designed by TimMJN and this is my version. It works, but if you want more than occasional blips from it, you may need something extra...

Links:

• TimMJN's git repository for his schematic: https://github.com/TimMJN/Geiger-Counter-Module (Thanks, Tim!)
• Git repository for the Geiger counter: https://github.com/2969773606/GeigerCounter-V1.1
• Git repository for my schematic, panel, and STL file: https://gitlab.com/rsholmes/nucleardecay
• My blog posts:
  • https://www.richholmes.xyz/analogoutput/2024-01-11_nuclear-decay/
  • https://www.richholmes.xyz/analogoutput/2024-01-20_nuclear-decay-meets-autunite/
  • https://www.richholmes.xyz/analogoutput/2024-03-04_three-new-ones/
• Synth website https://www.richholmes.xyz/topics/synth/
• Video about the prototyping board: https://www.youtube.com/watch?v=KgNe23wLIq0
• Nervous Squirrel's Ore-some Volts: https://www.nervoussquirrel.com/ore-some_volts.html
• Radioactive consumer products: https://orau.org/health-physics-museum/collection/consumer/index.html
• Geiger Check: https://geigercheck.com/

Music: Ringtone by Rich Holmes