Though the primary function of the USBCEE Tiny-PAT is to test USB-C power adapters, it can also be used as variable power supply.
Using Tiny-PAT in manual mode, you can select any one of the voltages supplied by the USB-C power adapter. The selected output is then available through the GND and VBUS contacts. As USB-C power adapters can support up to seven different output voltages, there's a good amount of flexibility.
An 87 W USB-C power adapter from Apple (https://www.apple.com/shop/product/MNF82LL/A/87w-usb-c-power-adapter) can be used along with USBCEE Tiny-PAT to generate 5 V/3 A, 9 V/3 A, 15 V/3 A or 20 V/4.35 A (87 W) outputs.
Verizon’s USB-C charger (https://www.verizonwireless.com/accessories/verizon-usb-type-c-wall-charger-with-fast-charge-technology/) can be used to generate 5 V/3 A, 7 V/3 A, 8 V/3 A, 9 V/2.7 A, or 12 V/2 A (24 W) outputs.