I'm working on a hexcrawl setting too, and picked up these resources for inspiration
Points of Light series by Goodman Games
Points of Light 1 - Good stuff for a generic medieval fantasy wander around campaign
Points of Light 2 - Good stuff for a 'explore the new world campaign. I really like the settings in this one, there are 4. Explore around a recently established colony, Explore from the lone trading town into jungles of danger, Sail on the seas and explore different islands for fun and profit, and one where you explore into a pocket home plane of a dark god. I really like the points of light series. Should be easy to convert to 5e. I'm happy with picking both of these up, and the Points of Light #2 basically had me re-evaluate what I was doing with my setting completely. Thumbs up!
There is Blackmarsh also on Drivethrurpg, its by the same authors and is free, so you can download and get a taste if you like the type of info. Batintheattic Games is the publisher for that one, he has a popular blog.
Hex Crawl Chronicles - By Frog God Games
There are 7 of these so far, each with a very detailed region. Lots of ideas in each, some good, some wacky, and some definately won't fit my setting (Robo-milkmaids, Killer bunnies, space vampires). But sooo loaded with encounter ideas you'll definately find some good stuff. I only bought the first one so far, but am happy with the purchase.
The author of the Hex Crawl chronicles also writes up a full hexcrawl setting in each of his issues of the fanzine Land of Nod. Issues #1 and #6 are free, so you can search for them and download to see if you like the author's style. Again, not a fit totally for my setting, but soooo many great ideas its easy to find stuff you like.
For websites w. useful info try:
The Welsh Piper (
http://www.welshpiper.com/hex-based-campaign-design-part-1/)
The Alexandrian (
http://thealexandrian.net/wordpress/17308/roleplaying-games/hexcrawl/)
Ars Phantasia (
https://arsphantasia.wordpress.com/2014/02/20/hexcrawl-resources/)
Good luck!