The Wirecutter's summertime gear list looks like good advice year-round
Despite the intense soldering-iron-and-safety-glasses tone of the site's title, it offers simple guides to finding the best headphones, or TV set or camera, of course, but also guides for finding a good water bottle, weather app (Android or iOS), yoga mat or surge protector. You get a full explanation about the reviewers' preferences, why the top pick was chosen (which often helps you realize you might be better off in your circumstances with their second choice) and what torture they put their gizmos through. They even provide price alerts when one of their picks goes on sale.
Anyway, I was browsing through their "Summertime Gear for 2014" page today, and trust me: the advice you'll find here can help Floridians year-round. Find a great beach umbrella or beach towel. What you need for a good barbecue or picnic. Stuff you can stash in your car and forget about until you really need it.