Hi, Fizlespark here. This is a miniguide/tip section where I hope I can give you some idea's of some maybe more uncommon items to keep for your Transmogrification Weapons
I will go section wise of weapon's sort
Two - Hand axe:
Dark Edge of Insanity - Dark Edge of Insanity - Item - World of Warcraft
Bryntroll, the Bone Arbiter -http://www.wowhead.com/item=50415
Drake Talon Cleaver - Drake Talon Cleaver - Item - World of Warcraft
Nightfall - Nightfall - Item - World of Warcraft - (Fits good with fire themed sets.)
Singing Crystal Axe - Singing Crystal Axe - Item - World of Warcraft - (My personal favorite, just looks amazing. Found it cool with any shiny steel theme)
Axe of the Nexus Kings - Axe of the Nexus-Kings - Item - World of Warcraft - (Looking cool, but I assume this will be used by many as its easy farmable etc)
Hellscream's Will - Hellscream's Will - Item - World of Warcraft - (HORDE ONLY - transforms into some ugly mace for alliance)
Legionfoe - Legionfoe - Item - World of Warcraft - (Will be rare, if you got Shattered Sun rep to revered and are lazy, get this!)
Reaver of the Infinitis - Reaver of the Infinites - Item - World of Warcraft - (If you want a laser Polearm this is your item)
Torn-Heart Axe of Battle - Torn-Heart Axe of Battle - Item - World of Warcraft - ( Fit's good with a plague themed set. Dk's sure have a lot of those)
One - Hand axe:
Doom's Edge - Doom's Edge - Item - World of Warcraft - (Looking very good)
Falric's Wrist-Chopper - Falric's Wrist-Chopper - Item - World of Warcraft - (Looks like a two-hand axe)
Frost Giant's Cleaver - Frost Giant's Cleaver - Item - World of Warcraft - (My personal favorite, old classic from WOTLK, looks good as they are an X on your back. That's kinda what I like about these)
Netherbane - Netherbane - Item - World of Warcraft - (Extremly cool, but are going to be used by far to many to be unique)
Firebrand Battleaxe - Firebrand Battleaxe - Item - World of Warcraft - (Good for fire themed again..)
Stellaris -http://www.wowhead.com/item=28263 - ( Really cool, if just casters could've used this..kreemt elemental shamans)
Two - Hand sword:
Aesir's Edge - Aesir's Edge - Item - World of Warcraft - (Looks good on blood elfs)
Blade of Hanna -http://www.wowhead.com/item=2801 - (Want to be a ninja? This is the weapon for you!)
Mourning Malice - Mourning Malice - Item - World of Warcraft - (Cool weapon? Kinda huh Icy?)
Blade of the Titans - Blade of the Titans - Item - World of Warcraft - (ugliest sword in the world, just had to include it)
illidari-Bane Claymore - Illidari-Bane Claymore - Item - World of Warcraft - ( A cool weapon worth to have a look at)
Sword of Nefarian's Hand -http://www.wowhead.com/item=65982 - ( My favorite, its not that over made, just a cool sword ++)
Witchfury -http://www.wowhead.com/item=13051 - ( Simple, but cool)
Armageddon - http://www.wowhead.com/item=40343 - ( Thanks to Confucius, get two of these and be a gnome warrior, Il promise you it will rock!)
One - Hand sword:
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Blade of Wizardry - Blade of Wizardry - Item - World of Warcraft - (caster laser sword ZOMG)
Blinkstrike - Blinkstrike - Item - World of Warcraft.
Chromatically Tempered Sword -http://www.wowhead.com/item=19352- (Not bad, not bad)
Spellfire Longsword -http://www.wowhead.com/item=24361 - (An easy caster lazer sword OMG)
Hailstorm -http://www.wowhead.com/item=40491 - (Cool icy sword, yes please)
Maladath, Runed Blade of the Black Flight -http://www.wowhead.com/item=19351 - (Coolest tanking sword around)
Teebu's Blazing Longsword -http://www.wowhead.com/item=1728 - ( Laser sword for everyone, I'm sorry you are never going to get this!)
Remorse -http://www.wowhead.com/item=45142 - (cool dagger look swordlike)
Assassination blade - Assassination Blade - Item - World of Warcraft - (1 hand ninja sword, niiiiiiice)
Slayer of the Lifeless -http://www.wowhead.com/item=39344 ( Cool sword, lore wise aswell)
Will do maces later!, if you got any really cool weapons you feel I'v passed please comment about it!