Memorial Day is nearly here, meaning the seasonal sales are in full swing. If your weekend plans involve pool parties or barbecues, now is a great time to pick up a portable speaker or set of solar lights, as many of our favorite models are currently on sale. You can also find deals on everything from 4K OLED TVs and noise-canceling earbuds to tents, robot vacuums, and plenty of our favorite everyday essentials.To give you more options, we’ve also included a selection of deals from retailers that aren’t necessarily running their own Memorial Day sales but are still offering limited-time…