Follow ZDNET: Add us as a preferred source on Google.Summer season is here, and there's no better time to consider updating your travel stash -- and we're not just talking about your flip-flops and sunglasses. And right now, during July 4th weekend, you may be able to scoop up some handy tech items that are perfect for keeping tucked into your suitcase or carry-on.  Also: The best July 4th TV dealsFrom Bluetooth gadgets to travel chargers and teeny SSDs, these are our favorite travel gadgets to buy right now The best travel gadgets to buy right now