Hey, all. I think we've all had those experiences where we die in an ES, are forced to reload, and wind up finding things we hadn't before. Maybe it's a hidden potion, or some Gold, etc. Even starting a new game can have you saying "I've played this game for years and am only now finding this?". Here are some of mine...
I realized there's a beehive hiding under the northern walkway (where the Whiterun guards patrol) in Riverwood.
Initially, I gave up completely on thinking there was any sort of chest/loot outside the entrance of Bleak Falls Barrow, but I did find some just recently. Did you guys also find it? Maybe all of you did already, lol.
There's also a potion just outside the back entrance of Bleak Falls Barrow, to the west at your feet.
There's another lockbox hiding under an overturned basket with a Skill Point book on top of it. Part of the ruins of the destroyed stone house, across the river, north of Ivarstead.
There are 3 Rock Warbler Eggs in a basket in the Helgen Keep. (the 'find some potions' optional part with Hadvar; that room)
I think Skyrim gets criticism for not hiding awesome and diverse items like Morrowind did. There was so much to find in Morrowind; made exploring actually fun and worth it! Not so much in the two future titles.
Did you guys find the enchanted Pickaxe? Lol.
Doesn't necessarily have to be items - anything you missed initially, but later found out about in an ES game.