I like this, having a card per project with at least one next action defined. This way your next action and project cards can be freely mixed because there's always a next action to look at. Nice.1. Collection: As tasks (NAs) and projects come to mind, they are written down on separate index cards according to simple and flexible formats. The project cards list one or more tasks, so all the cards have at least one task (NA). Sometimes a card is processed immediately, but if not they are placed in the "inbox" (a card tab) and processed as a batch.