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Last Monday, the accidental launch of Facebook’s (s fb) newest app gave users a sneak peek into Slingshot — which appeared from photos to be an extension of its previous ephemeral messaging app, Poke. On Tuesday, users will finally get to use the app, developed Facebook Creative Labs, as it rolls out in the U.S. to both iOS (s aapl) and Android (s goog).

The second Creative Labs app to be produced after Paper, Slingshot is a lightweight app that actually has very little traditional “Facebook” design cues. Users can choose to sign up via Facebook or simply by phone number, and begin sending “slings” — ephemeral photos or video — to friends in your contact list. From there, the mechanics work very similarly to apps like Snapchat or Taptalk: Users take a photo or a video, add text or drawing, and send it off to friends.

Screenshots courtesy…

The 3Doodler and Lix 3D printer pens made some big promises during their crowdfunding campaigns: the ability to create 3D works of art, drawing straight up in the air. The Lix has yet to ship, but the 3Doodler never quite met those promises. It was loud, clunky and painful to use.

The CreoPop is a new $89 3D printer pen that is scheduled to make its debut on Indiegogo today. During an in-person demo, the team behind the pen didn’t pretend that the pen will be faster, more ergonomic or more detailed than the other pens on the market. But they did prove that the pen is something different: a totally quiet device that works with ink that is cool to the touch, making it more friendly for use by children.

During the demo, a CreoPop representative spent a few minutes printing a tiny flower and 3D box. The pen was…