As you progress through Borderlands 3, you might find chests marked with a "T" symbol. These are what the game calls Typhon Dead Drops and they're linked to one of the major challenges you can complete in the game involving audio logs left behind by the first Vault Hunter, Typhon de Leon. You might've encountered a few of these in Pandora during the opening hours of the game and probably spent five minutes flailing about in frustration figuring out how to unlock it.
To open these chests, you need to find all of the logs left behind by Typhon de Leon in the map you're currently in. While you might be thinking, "Oh no! I have to figure out where all of these tedious collectibles are?" Don't worry, the log locations are clearly marked on the map, sparing you the difficulty of having to find them completely blind. And once you've acquired all three, the location of the Typhon Dead Drop will be revealed to you on the map.
There's typically one Typhon Dead Drop per open area map, so try taking the time to seek out the logs to nab yourself some solid loot. It's also worth finding and listening to these logs because they actually include details that have ramifications on what you discover later on in the story. Definitely take the time to do it to better enjoy the twists and turns of the game's more potent revelations.
In our Borderlands 3 review, author Jordan Ramee gave the game an 8/10 and said, "Borderlands 3 has a few stumbling blocks when it comes to bosses, but these fights are overshadowed by the game's rewarding gunplay and over-the-top humor. The game's character-driven narrative acts as a satisfying finale for the loot-shooter franchise, and the new mechanics and features--especially the reworked skill trees and weapon manufacturer effects--give you plenty of agency in how you want to play through it. If you've never been a fan of the franchise, it's unlikely Borderlands 3 does enough things differently to change your mind, as the game best excels at continuing what the series has always done: deliver a humorous tall tale of misfits looting and shooting their way to heroism."