Why suffer the uncertainty of death when you can live forever by preserving your head in a jar? The Futurama Head in a Jar app (free) offers just that: immortality.

The app lets you design heads to resemble yourself or friends by letting you choose various eyes, noses, hair styles, skin color, etc. Then you can place your friend’s name on the jar’s nameplate just in case your message is unclear. Their head, in a jar, forever.

My favorite feature is that you can quickly assign your head-in-a-jar to any iPhone contact using the app. The next time your friend calls, their head-in-a-jar will appear. You can also save them to the iPhone’s Photos library or share on Facebook and Twitter via the app.

And just in case you’re wondering, the preserving liquid inside the jar is drinkable and some even enjoy the taste.