Your search for "on off switch" revealed the following:

RIITOP Short USB C On Off Switch Cable 10Gbps [1ft], USB 3.1 Type-C to C Cable with Switch Support Video/Data/PD Fast Charging 20V/3A

RIITOP USB Type-C Extension Cable with On Off Switch [1ft], USB 3.1 Type-C Male to Female Extension Cable with ON/Off Switch Support Video/Data/PD Charging

RIITOP USB-C ON Off Cable [3.3FT], USB 3.1 Type-C Male to Female Extension Cable with ON/Off Switch Support Video/Data/PD Charging

RIITOP USB Type-C On Off Switch Cable [3.3ft], USB 3.1 C to C Cable with Switch Support Video/Data and 20V/3A PD Fast Charging [10Gbps]

RIITOP USB Extension Cable With ON/OFF Switch - Male to Female Support (Data and Power) for Headset, LED Strips [3.3ft, 2-Pack]

RIITOP USB ON/Off Switch Cable [3M, 2-Pack], USB 2.0 Male to Female Extension Cable with Switch Support (Data and Power) for USB Headset, LED Strips

PC Power Button, Desktop Power Button PC External Power Switch ON Off LED PC Power Supply Button SW Extension for Computer Motherboard

PC Power Button, Desktop Power Button PC External Power Switch ON Off LED PC Power Supply Button SW Extension for Computer Motherboard 6FT

RIITOP OCuLink eGPU Dock 64Gpbs Oculink SFF-8612 External GPU Enclosure for PCIe 4.0 x16 Graphics Cards