This mod introduces a token called "Bottlecap" as a MISC object, just like normal Bottlecaps - except that it shows up in your inventory. This token acts as a physical interface to your actual caps, syncing up whenever either caps or the tokens are added or removed from your inventory. This means that you can put the tokens in a container, give them to an NPC, whatever. When the add/remove event is processed, this mod will resync the numbers and the correct balance will appear as your true cap count.

The one situational exception is when you're bartering. Your inventory bottlecaps will not appear in barter screens, as they are quietly removed before the screen opens. When you exit the barter screen, the script will place the correct number of bottlecaps into your inventory.