We just announced the release of Droplet Tagging in the control panel today. You can now apply tags and filter your Droplets by tag. You can read more about the release here:
And how to apply tags here:
We are planning to extend the availability of tags to other resources like Domains, Floating IPs, and Block Storage Volumes as well as letting you manage entire groups of resources at once using tags.
As always, thank you for the feedback.