Smartphones, tablets, and laptops are all capable of being transformed into surveillance cameras and e-readers when their core functions are no longer relevant.
If you have a USB drive, you can disconnect it, transfer it to another computer, and still have all of your favourite apps with you.
This may be the first thing you do when your computer is experiencing issues like bugs, crashes, and viruses—or when you are called in to fix someone else's computer
It's up to you whatever diagnostic tools you install on your USB stick, however there are a lot of useful ones available for free
If anything goes wrong with your computer, you may use a spare USB stick to build a Windows recovery disc.