With 3D printing becoming mainstream, you can manufacture just about anything with ease.

Now, you can add a 3-D printed car to that list.

Google co-founder Sergey Brin wearing an early version of Glass.

You may have recently seen some funny-looking headgear on the brows of top Google execs—and while it may look like a nerdy fashion statement, Google’s Project Glass very well may be the future of human-machine interaction.

3D printing has become more popular over the last few years, with some lower-cost models becoming a possibility for hobbyists and not just professional engineers. However, a new 3D printing PEN promises to make 3D printing a possibility for everyone and to open up a whole new world for the technology.

Cleaning a window is a pretty boring task, and one that never seems to yield perfect results. But fear not: the inventors at Ecovacs have created a pretty amazing device that will clean your windows for you.

Addiction is a monumentally large problem in our society today—larger than it’s ever been. I’m not just talking about drugs, though; our society’s most common addiction has become technology, namely the smartphone.

Recent reports on the coming Samsung Galaxy S IV suggest that the flagship device will feature a 4.99-inch 440ppi Full HD Super AMOLED display. It’s a mouthful, but in short, it means that Samsung will soon be delivering its best ever display on a smartphone.

Mozilla said it won’t be launching its own hardware to run the Firefox OS when it’s finished, but the company just announced a “Developer Preview Phone” to put the system to the test. It’s not the same device seen sporting Firefox OS at CES, but its specs are similarly basic. The handset will feature a 3.5-inch HVGA touchscreen and a 3-megapixel camera on the outside, with a 1 GHz Snapdragon S1 CPU, half a gig of RAM, 4GB of storage (expandable by microSD), WiFi, and a 2G and 3G antenna on the inside. Nothing too extraordinary—just enough to run the software. Mozilla is promising OTA updates to Firefox OS to keep devs up to date. No word on a price yet, but the first units are expected to be available next month.

Numark was kind enough to let me try out their NS7FX DJ controller, and I love it so much I may just have to buy one for myself. It’s one serious piece of equipment, and it’s probably the closest thing to the feeling of real decks you can get from a controller.

It takes a certain kind of person to love a standing desk, and that kind of person will love this one. The GeekDesk is one of the best standing desks I’ve seen. It’s a little on the expensive side, but it has a built-in electronic lifting system that allows you to set the perfect height, and it can lift 335 pounds easily.

The Nexus 7, #3 on our list of the best gadget gifts for Christmas 2012, boasts a quad-core processor and the Android Jelly Bean OS, so it’s much faster and smoother than previous Android tablets. It’s small and compact, and it allows access to the broad universe of Android apps. It’s the tablet you want if you’re not picking up an iPad, and we’re giving it away. Click through for the details.