It's always worth keeping notes when you're out in the wild, whether it's to do with things important for survival such as learning plant names and finding out what's edible, or just some inspired scribblings informed by nature.
The Kombat UK A6 Waterproof Notepad is a great item to keep in your prepping supplies, and won't fall apart when the British weather kicks up.
A5 sized waterproof notepad
• 50 page spiral bound notepad
• Allows the user to function in poor weather conditions
• Dimensions: 21 x 15cm