I made this filament runout sensor mount for my Ender 3 V2 : r/ender3
Official Creality Ender 3 3D Printer Fully Open Source with Resume Printing Function DIY 3D Printers Printing Size 8.66x8.66x9.84 inch : Amazon.ca: Industrial & Scientific
Creality Ender 3 V2 Neo (220x220x250mm) – 3D Printing Canada