You can get USB A to C and vice versa adaptors not cables. They are a bit weird in that you cant plug the cables in both ways up but they do work. More convenient and cheaper than lots more cables (and lots of items have captive cables).
Section 2.2 of the USB Type-C Specification[1] explicitly forbids this kind of adapter:
USB Type-C receptacle to USB legacy adapters are explicitly not defined or allowed. Such adapters would allow many invalid and potentially unsafe cable connections to be constructed by users.
