Notable

iPhone / Productivité

This is a simple app that lets you write down all your creatives with simple keywords and (optionally) more information. You then need to rank those ideas from best to worst.

The reason for ranking them is to make sure to take a step back and compare how good your new lightbulb moment is compared with all your other ideas. This will allow you to keep focusing solely on what you think are your great ideas while still keeping track of everything.