Bulk DIY items for eurorack/modular

3.5mm Jacks.

Yes, you can just buy a bunch of them and be set for life. Buy Thonkiconn apparently. My one quip is that they appear pricey. Would be nice to shop around and ask muffwiggler what the recommendations is for valuable.

-Thonkiconn Mono 3.5mm Audio Jacks (PJ398SM)
https://www.thonk.co.uk/shop/3-5mm-jacks/