From Starbounder - Starbound Wiki
Familiar Jar is an object unobtainable by players through normal means. This item's information is present in the game files, but not intended by developers to be in players' possession.
Familiar Jar is a breakable object found in Avian Tombs.
|Apex :||This jar looks very familiar.|
|Avian :||I've never seen a jar like this before, perhaps the remains of someone with a sense of humour.|
|Floran :||I wonder how thisss creature tastess.|
|Glitch :||Interested. I have never seen such a creature before.|
|Human :||Hey that looks like a...|
|Hylotl :||Strange creature.|
|Novakid :||What kinda critter is this supposed to look like?|