India, June 4 -- If your summer plans include camping or a weekend away at a cozy lakeside cabin, you'll want to pack the car with some things to do in the evenings. Games and puzzles are a given on those types of trips, but if you want a really magical experience, bring a bedsheet and a portable outdoor projector, and voila, you have a memorable night of alfresco cinema at your fingertips.

And what better time for Amazon to run a big sale on these nostalgic gadgets than right now, on summer's doorstep? Some of the best-rated projectors are deeply discounted, including one of its top-reviewed for picture quality-the Onoayo 4K Portable Projector, marked 40 percent off. If you grab it ASAP, you'll save a whopping $146. Plus, shop five oth...