Need a digital projector? These eight options are now at low Green Monday prices

Digital projectors used to be almost the exclusive domain of business pros. While PowerPoint presentations are still the bread and butter of a business pitch, projectors have now become so powerful and so small that they're actually an easy way to assemble an entire media library and view it almost anywhere.

Whether you've got your eye on a digital projector for business or pleasure, these Green Monday-infused collection of projectors, now on sale, should get your attention. But, just in case you aren't fully on board yet, you can even take an extra 20% off the price of each of these models when you enter the promo code GREEN20 during checkout.

Prima 1080p HD Pocket Projector – $639.20 after promo code; originally $799

While many projectors suffer from under-powered bulb strength, this Prima unit has no such problems. At four times the brightness of other portable projectors, this 200-lumens boomer also houses a 64-bit quad-core processor so you can access the Google Play Store and stream directly from Prima with up to 3 hours of playback time.

PIQO Powerful 1080p Mini Projector – $223.99 after promo code; originally $799

The PIQO is like building a movie theater inside your house. Find a wall, fire up this HD quality, crystal-clear image projector, and watch your favorite films and TV shows at a massive 20 feet across. Cast anything from any of your devices onto any surface via Wi-Fi or Bluetooth, and you'll get up to 5 hours on a single charge from this projector that weighs less than 8 ounces.

Cinemood 360 Bundle: First Interactive Projector with 360 Motion Capability – $319.20 after promo code; originally $499

No plugs, non cables, no cords – the Cinemood 360 is a standalone device designed so even the kids can enjoy using it. As the only handheld projector that supports 360-degree videos, the Cinemood encourages kids to get active with interactive motion and learning games, as well as educational Disney content built right in.

4K HD DLP Pocket Projector – $239.99 after promo code; originally $499

This mini projector from Kinkoo plays nice with just about every file format and connection possibility under the sun. Connect to your phone or other device via Bluetooth or MiraCast Mirror Display, then play video in a variety of formats all the way up to 4K, including 3D. Powered through the built-in 3000mAh battery, you even get a remote to make your media control absolute.

Kodak Luma 75 Portable 1080p HD Pocket Projector – $189.99; originally $199

Kodak Luma 150 Portable Wireless HD Projector – $219.99; originally $249

They fit in your hand, yet both of Kodak Luma models, the 75 and the 150, give users the ability to screen HD videos in up to 1080p resolution flawlessly. Both models give you plenty of connection options, including hookups for HDMI, USB, and microSD inputs as well as via WiFi. The biggest difference between the two is their maximum projection size, with the Luma 75 beaming images up to 100 inches, while the Luma 150 bumps up to a full 150 inches across.

Epson EX5260 Wireless XGA 3LCD Projector (Certified Refurbished) – $419.99 after promo code; originally $629

Epson PowerLite 1780W LCD Projector (Certified Refurbished) – $519.99; originally $749

These projectors from Epson are a little bigger than most of the handheld units on this list, but what you lose in size you more than gain in added visual power. The EX5260 is ideal for detailed, text-heavy presentations, buoyed by a blistering 3,600 lumens for a bold, vibrant image, even in well-lit rooms. That's helped by the 3LCD color accuracy for high color brightness and a wide color range, all in stellar HD sharpness.

As for the Powerlite, this ultra-slim model supports Chromecast, Roku, and MHL-enabled devices. That's a big help since it also projects in widescreen 16:10, so when you hook up to your streaming service of choice, you get a true cinema-quality experience. Plus, with 3,000 lumens of brightness, combined with a 10,000:1 dynamic contrast ratio, ambient light isn't a problem, even in viewing detail in dark areas of the image.

Prices subject to change.