What secret/unused weapons are in Half-Life 2?

Question

I was playing around with some stuff in Hammer Editor one day, when I found a weapon that piqued my interest:
weapon_alyxgun
Sure enough, it was Alyx's gun. The viewmodel had no hands, and was a giant gun jutting out of the screen, but it still worked just like Alyx's gun.
Later, I found another weapon - weapon_cubemap. It was six shiny spheres in front of the screen.

I was wondering what other weapons might be unlocked through the give command. Are there any others that occur in vanilla Half-Life 2, not any betas or mods?

Answer 1

I found the following list here.

weapon_357 - The 357

weapon_alyxgun - Alyx's gun. It was not supposed to be used by the player so it lacks a viewmodel

weapon_annabelle - Grigori's shotgun. It was not supposed to be used by the player so it lacks a viewmodel. It takes two 357 rounds for each shot

weapon_ar2 - The pulse rifle

weapon_brickbat - An unfinished and unreleased gun. It is unusable as it lacks models

weapon_bugbait - Bugbait

weapon_crossbow - The crossbow

weapon_crowbar - The crowbar

weapon_frag - The frag grenade

weapon_physcannon - The gravity gun

weapon_pistol - The pistol

weapon_rpg - The RPG

weapon_shotgun - The shotgun

weapon_smg1 - The smg

weapon_striderbuster - The strider buster

weapon_stunstick - The Combine stunstick

Descriptions added by me

This means that weapon_alyxgun and weapon_annabelle are the only weapons that can only be acquired with the give command.

Answer 2

There is also this one:

weapon_citizensuitcase

It's a suit case used by a male citizen at the beginning of the game.

Keep in mind that the viewmodel will take up 2/3 of your screen if you use it.