Wallet sized index cards. I put thoughts and ideas. They can be sorted and copied to elsewhere if it's something that gets implemented. I also use Google keep

Wallet sized index cards. I put thoughts and ideas. They can be sorted and copied to elsewhere if it's something that gets implemented. I also use Google keep for all product and Tech ideas. that's if it definitely has an implementation or it's a task or thing to research. Pocket moleskin for daily log.