Purpose of this is to preserve knowledge. We all have come across regular mobs (not raid ones or dyna/mission bosses) droping something unique to them. Here's few of them, feel free to add any other mob/item you can think of, just please reports from first hand only, no hear-say. (droprates are estimated on drops/counted kills, may depend on luck)
Moles (Shovelet, Diglet, Scooplet, Mole) - located in Aegean, Pleasant Meadows, Broken Shores
Charge of Repair - 0.2% droprate(2/1000)
Mole Stinger - 0.1% droprate(1/1000)
Mole Robot Retinal Filters - 0.2% droprate(2/1000)
Notum Saturated Metaplast Shell - less than 0.1% droprate (0/1000)
Experimental Mole Robot Sonar - 0.2% droprate (2/1000)
Parts for Dodga quest - only those in Aegean
Medusas - lacated in EPF, DAV, missions
Notum Threaded Zodiacal Blanket
Yearning Armor
Mitaar
Entvited mobs (generals, colonels, etc..) - Located in DAV, missions
JJ's Berry - 7% droprate(7/100)
Ring of Haste - 3% droprate(3/100)
Airframed Blaster Betatype - 3% droprate(3/100)
Cyborgs - located in GTC, Mort, PW, Avalon, missions
Library of Foul Language
Cyborg Death Squad Armor
Cyborg Implants
Experimental Cyborg Token Board - only drops of higher ql Cyborgs
Slayerdroids - Located in PM, EPF, Broken Shores, missions
Blue Bracer of Balance
Aluminum Armband of Ambidexterity
Experimental Nanobot Classifying Computer
Saltworm - located in PW
Unrefined Notum Salt - 100% droprate
Sandworm - located in GTC, WW, Mort
Sandy Boots - 2.7%droprate (3/110)
Sandy Piece of Goo - 3.6% droprate(4/110)
Sandy Shoulder Plate - 3.6% droprate (4/110)
Giant Chirop - located in Aegean, ?
Mutating Giant Chirop Egg - 12% droprate (6/50)
Stalker - located in Stret East, ?
Stalker Carapace - 25% droprate (7/28)
Rollerrat Queen - located in Aegean, ?
Rollerrat Queen Blood - 100% droprate (10/10)
Anuns - located all around RK, drops confirmed from higher ql in PW
Anun Leg - 1% droprate (1/100)
Anun Tooth Trophy - 3% droprate (3/100)
Anun Wing - 2% droprate (2/100)
Bileswarms - located in Longest Road, WW, EPF, missions, ?
Gardener's Gloves - 3% droprate (3/100)
Shapeshifting Pearl of Notum - 1% droprate (1/100)
Gripping Pearl of Deception - 3% droprate (3/100)
Ichor-covered Gem Of Smoothness - 1% droprate (1/100)
Eyemutants - located all around RK, missions
Eyemutant Orb Laser - 2% droprate (4/200)
http://auno.org/ao/db.php?id=204973 - 1.5% droprate(3/200)
Finger Ping-Stinger - 1% droprate(2/200)
Massive Steel Body Armor - 2.5% droprate(3/200)
Secondary Eyemutant Heart - 1% droprate(2/200)
Eyemutant Sinews - 2% droprate (4/200)
Long Eyemutant Sinews - 2% droprate (4/200)
Short Eyemutant Sinews - 2% droprate (4/200)
Manteze Scout - located in Aegean, Warmit Woods, missions
Manteze Scout Nasal Membrane - 25% droprate (4/20)
Scarlatina Omus - located in Mort, CAV, missions
Slow-Killing Poison - 100% droprate (10/10)
Vultures (Scavengers, feudal) - NW of Greater Tir county
Ring of flying - 0.5% droprate (1/200) droped of Scavenger, counted Feudal in calculations too