If you want to repurpose an old SSD as a speedy flash drive, this Ugreen M.2 SSD to USB-C enclosure offers you the chance for a bargain price from Amazon.

The Mobile SSD relies on USB 3.2 Gen 1 for connectivity with USB-C as the port of choice. Performance is rated at 550 MB/s with a SATA drive at its heart. Compatibility includes Windows and macOS.

Samsung’s T7 portable SSD is now available following its introduction earlier this year at CES 2020. The T7 is the successor to the slim, wallet-sized T5 USB-C SSD that came out in 2017.

The bottom has a slide-out USB 3.2 connection, blue-colored to denote USB 3.2. Further Enclosures/Externals Reading – Our Latest Reviews Seagate Ultra Compact SSD 2TB Review - A Pocket's Best Friend ...

The Visiontek USB 3.0 Pocket SSD is self-contained (no cable to lose as with the Samsung T1), affordable, and a very fast reader. It also shed heat quite well in my testing and has a nice heft to it.

Any cheap USB 2.5" external drive off eBay will do. I use the guts out of one for that purpose. Samsung also supply one with their SSD for copying data, but it works well off a single USB port.