You can actually power your Mac mini with a USB-C cable and a giant battery pack

Macworld
Because of its small size, the Mac mini is a favorite computer to tinker with for unique setups and situations. One person shows some ingenuity with the device by demonstrating in a YouTube video how he was able to modify the Mac mini so that it can be powered through a USB-C port instead of its power supply.In the video, Saad Ouache shows an open Mac mini with a wired USB-connector that he added and says uses Power Delivery to run the computer. He then connects a 12-volt battery power