Hi jammers! If your menus are still silent and you'd rather spend jam hours on the scary stuff, here's a free pack of 20 UI sounds (clicks, hovers, toggles, confirms, back/cancel, errors) as WAV files:
https://bigshadex.itch.io/pulselite-ui-sfx-free

You can hear them all in the browser first: https://bigshadex.github.io/pulselite-previewer/

Going darker? PulseLite Horror UI has 104 eerie menu sounds with the same event names ($4.99): https://bigshadex.itch.io/pulselite-horror-ui

Since the jam rules say no AI-generated content: the sounds are procedural DSP synthesis, not AI-generated. The optional Godot helper script and the page text were written with AI assistance, so just use the WAVs and skip the script if you want to stay strictly within the rule.

Free for jam and commercial use; a credit to "PulseLite UI SFX by Bigshadex" is appreciated (CC BY 4.0 on the free sounds). Good luck, and happy haunting!