Combined weapons is a mod that is very simple but surprisingly I could not find.  It lets you combine two melee weapons at a workbench, and get 1 cooler better weapon.  For example, a pool cue, and a knife, gets you a cool weapon you can slash people with, or you can make it into a spear, to throw at your opponents.  This mod adds the damage of the primary weapon(typically the one that is a stick) with half the damage of the second melee weapon.  There are also some misc items you can make into weapons.  You can craft all of these weapons with a crafting level of 20, or you can find them in the craftsman shack located east of novac right up the hill of nelson.  This mod comes with leveled list integration for npc's and vendors to use the weapons.  If this mod already Exists, My apologies, I couldn't find it.

The mod uses default texture paths so if you have any weapon texture replaces they should work, but I haven't tried myself.

You can teleport to the shack with "coc 00Shack"

If you have any requests put them in the comments.

The objects you can combine are:

-Primary
Fireaxe
Pool Cue
Rake
Sledgehammer
-Secondary
Cattleprod
Cleaver
Combatknife
Knife
FireHose
Hatchet
Lawn Mower Blade
Machete
Fragmine
Powder Charge

The basic recipe is (Primary) + (Secondary) + Duct tape.

These can craft the Weapons:

Fireaxe Cattleprod
Fireaxe Combat knife
Fireaxe Knife
Fireaxe Machete
Pool cue Cattleprod
Pool cue Cleaver
Pool cue Combat Knife
Pool cue Fire Hose
Pool cue Hatchet
Pool cue Knife
Pool cue Knife(Throwing)
Pool cue Lawn mower blade
Pool cue Machete
Pool cue Frag mine(Throwing)
Pool cue Powder Charge(Throwing)
Rake Cattle prod
Rake Cleaver
Rake Combat Knife
Rake Fire Hose
Rake Hatchet
Rake Knife
Rake Lawn mower blade
Rake Machete
Sledgehammer Cattle prod
Sledgehammer Combat knife
Sledgehammer Knife
Sledgehammer Machete

Installation

This is just a basic mod installation
-Go to your fallout NV folder and then go to Data
-Put all the files inside the mod folder into The Data folder
-If it prompts you to merge the folders click yes
-Launch the game and be sure to select it in data files on the launcher.