Combat Shotgun: Fairly common weapon and fairly common ammo. If it didn't need to repaired so much, I'd carry nothing but it and a Sniper Rifle.
Leather Armour: Gots to love Mad Max, plus it's common so repairs are simple.
Dogmeat: I like dogs. Litterally have no other reason.
Clover: I don't know why I like her so much, but I do. Plus she looks smexual in leather.
Plasma Grenades: For when you find 4 Enclave troops standing next to each other.
Dart Gun: For Deathclaws. They're waaaay too fast, so this baby helps me slow them down a bit.
Sniper Rifle: For easy Sneak Attack Criticals, then if they're still alive, you can pick them off while they try to close the distance.
Silenced 10MM Pistol: For killing people, when you don't want others to know.