If you're like me, you're someone who hoards anything and everything you come across in a Bethesda open world game (such as Fallout New Vegas or The Elder Scrolls V Skyrim). Problem is, your carry weight is limited, so very soon, you'll be overencumbered. This mod increases your carryweight to 1000000 (one million), so you should be able to hoard whatever you like from the beginning till the end of the game.
Oh, and yes, I am aware that you can open the console command and type "player.setav carryweight 1000000" to get the same effect as this mod, but when I installed a lot of mods into my copy of Skyrim, the increased weight only lasts until I load a saved game, so I had to type the command every time I played Skyrim. I don't know if the same would happen in New Vegas, but here's a mod for those who experience that problem, or who simply prefer not to use the console command.
To install, simply download the file, extract it, and copy it to your Fallout New Vegas/Data directory, then open FalloutNVLauncher, click on "Data Files", and enable the mod.