Best m.2 usb adapter, m.2 ssd, cable combo?

[Blitz Blitz]

Hi. I wanna make my own storage, like usb flash drive. It's good idea? What is good adapter, m.2 ssd, and what is comfortable cable lenght, if I wanna connect it, to tv, or other devices? Maybe should I buy prebuilt one? Also I heard something that m.2 ssd operating on high temperatures? Maybe get typical usb, or portable 2,5" ssd drive?

Help me to choose right. Thanks and sorry for english.

 

[USAFRet]

For a device you're connecting to the TV to play movies, DO NOT BOTHER with an NVMe drive. Waste of money.

And an m.2 SATA drive runs at exactly the same speed as any typical SATA external SSD.