Hollywood studios, news outlets and consumer brands are all dabbling with virtual reality. Many everyday folks will soon join them using 360-degree cameras coming soon from Samsung and LG.

But headsets to view VR video can cost more than $1,000 once you include a high-end personal computer with fast enough graphics. And while smartphone makers are designing cheaper headsets -Samsung’s Gear VR is $100 – you need a compatible phone. Replacing your current phone might cost you hundreds of dollars.

Fortunately, there are plenty of free, or at least cheap, options that rely on your existing phone or PC. The experience isn’t as smooth as what you’d get with Gear VR or upcoming headsets from LG, HTC, Sony and Facebook’s Oculus business. But you won’t go broke, either.

GOOGLE CARDBOARD

It sounds like a joke, but it works. Google Cardboard is essentially a piece of cardboard folded into a box that’s slightly shorter than a brick. You slip in an iPhone or Android phone that’s no larger than 6 inches diagonally. You run Google’s Cardboard app, and voila.

Google Cardboard is essentially a piece of cardboard folded into a box that's slightly shorter than a brick (Source: Google)

Models certified by Google are available for as low as $15 at http://www.google.com/get/cardboard/get-cardboard. Many companies are also giving them out for free; The New York Times sent one to its print subscribers in November, for instance. And you can build your own with cardboard, lenses, magnets, Velcro and a rubber band; find your own parts or buy kits for a few dollars on eBay.

With an Android phone, you can watch 360-degree videos of news events, rollercoaster rides and more on YouTube. You can find some by searching with the hashtag “360Video.” Hit the Cardboard icon on the lower right, insert the phone into the contraption and look through Cardboard’s lenses – remember those old View-Masters?

Turn your head around to see what’s behind you. Look up, look down, look to the side. The phone’s accelerometer senses where you head is, and the phone’s screen shows you the right perspective – in 3-D through Cardboard’s lenses.

The YouTube capability isn’t available on iPhones yet. But you can get other Cardboard apps through the iPhone or Android app store. The Times’ NYT VR, for instance, has segments on travel, politics and war. Google’s Street View offers 360-degree views of Machu Picchu and other places you might have only dreamed of getting to. Other apps let you play games, drive race cars or walk with dinosaurs.

One drawback: With most Cardboard models, the eyepiece isn’t adjustable, which could mean double vision or other discomfort. Cardboard also typically doesn’t come with a strap, so you have to hold onto it as you watch and move around. Cardboard can also be challenging for those with glasses. Pricier headsets offer greater comfort, and ones from Oculus, HTC and Sony promise more sophisticated apps.