1.A world of pain adds many different dungeons with new items and weapons, also has a ttw version that is really well made.
2.Bleed, a mod that I always use now for damage tweaks.
3.Tammers nif-bashed weapon pack is the only weapon pack I currently use outside of weapons included in quest mods, well made with mods and custom vendors in the capitol and mojave.

1. Always need a good pipboy replacer since the vanilla version looks like poo. I know a lot of folks enjoy the handheld pipboy but the problem is that it transports the item to the tip of your weapon when you press the button, so it looks goofy. Anyways, nowadays I really enjoy this one that was modeled after the pipboy from Fallout 76:

https://www.nexusmods.com/newvegas/mods/65980

2. New Vegas Redesigned 3 by Dracomies - It's absolutely lovely for what it does to characters in making them feel more alive and less like the fish people from Shadow Over Innsmouth.

https://www.nexusmods.com/newvegas/mods/56312

And if you use an ENB use this mod too to get rid of the ENB hair outlines:

https://www.nexusmods.com/newvegas/mods/64652



3. JSawyer Ultimate Edition - Project Nevada hasn't been updated in years. This mod (in my humble opinion) is a much better suited gameplay overhaul for FNV that doesn't break vanilla balancing.

https://www.nexusmods.com/newvegas/mods/61592/?

JIP companions mod
Solid Project
NMC texture pack

@celtic_spike wrote:

JIP companions mod
Solid Project
NMC texture pack

Is Solid Project still available anywhere?

1. ENB. My preferred is 47: The Sequel

2. TTW 3.2. I have never done a FNV install without TTW installed, so I guess it's pretty necessary.

3. Personal Character Model. This one isn't really a life or death thing like an ENB or TTW, however, I just can't get past my Courier looking like hammered shit. Besides, if we can have custom character models, why wouldn't we.