I'll collect some tools here that I personally use and recommend - any listing here will always be in accordance with my Recommendation Policy (TL;DR no-one can buy their way onto this list).
Prices checked 7th July 2025. May be different at time of viewing.
If you see (A) on a link or button, it means I am using an affiliate code. The cost to you does not change, although I receive a small payment if you use that link.
Hardware
Ideal for backups of your manuscript and other important documents. See my Backup series for more information.
Sandisk 64GB USB Stick
At the time of writing, this is Amazon's Choice also. Sandisk are a reputable brand, and this will work in any USB socket you have, even if it's not USB3.
Seagate Portable 2TB External SSD
If 64GB isn't enough, this will be. Seagate are another well-known brand, and at this price it'll be hard to beat.
Writing Software
Scrivener
The writing software I use and swear by.
Typewriter. Corkboard. Scrapbook. Scrivener combines all the writing tools you need to craft your first draft, from nascent notion to final full stop.