Satechi's Stand & Hub is a no brainer of an upgrade for the M1 Mac mini

Satechi's Stand & Hub transforms the M1 Mac mini into a compact workstation with a device that slips right under the computer with all the necessary ports at the front and a perfectly matched form factor. You've got a USB-C data port, three USB-A ports, micro/SD card readers, a 3.5mm headphone jacket, and there's even a hatch that can fit an M.2 SSD drive of your choice. It also has an integrated USB-C cable that plugs right into the back to power the hub without any additional hardware.  

$99, satechi.com