How do you capture sudden writing ideas? I

Something has been bothering me lately. You know that amazing feeling when a brilliant idea pops into your head? But then life happens... Maybe you're walking your dog, cooking dinner, or just lying in bed. Before you know it, that perfect idea starts fading away. It's so frustrating!

I would love to know what tools or methods you use to catch these fleeting ideas. What works best for you? Really looking forward to learning from your experiences!