Mouse Droid

The Mouse Droid can be bought from Toth, the Security Key Vendor on the Imperial Fleet, or Tamin on the republic fleet, for 25,000 credits. There is no excuse to not having a security key - not when you're missing out on this pet!

Once out, the Mouse Droid looks like this:

Rhythm Augmentation Droid

Technically this isn't a vanity pet, but it's fun so it deserves to be included. (It will also take up one slot in your bag.) Say hello to the Rhythm Augmentation Droid - it serenades you for 30 seconds and you can get it from Toth, the Security Key Vendor on the Imperial Fleet or from Tamin on the Republic Fleet, for only 55,000 credits.

Once out it looks like this: