Virral Triumvirate Egg is one of the most useful items you will find. The main reason is that you can wear two at a time on either the left or right shoulder and they increase your Intelligence and Psychic ability +30 (wearing 2 of them). They also increase Health, Nano has some damage bonuses.
The Mantis Egg drop from Mantis Breeders or the Mantis Queen located inside Smuggler's Den in Southern Foul Hills. The Breeders drop the egg occasionally while the Queen has a 100% drop ratio.
Soul Fragment and Small Gold Ingot are found on mobs or missions in chests anywhere on Rubi-Ka but the droprate is not high, so you may spend a bit of time acquiring one. Gold in this QL also has a high drop rate from the Medusas in the north west corner of Eastern Fouls Plains.
Robot Junk drops from high level robots mobs like Slayerdroids and Ninjadroids on Rubi-ka.
All the remaining items are tools and can be purchased at general shops in the tradeskill department (be aware you will need to buy high QL tools).
Now it's time to make your new Virral Egg with the following process (you will probably need a tradeskiller to do this for you):
Requires 807 Mechanical Engineering Skill and 304 Agility (285 Agility for first Fragment, 294 for second and 304 for last).
The Triumvirate Egg
The Virral Triumvirate Egg is used to equip armor that requires Intelligence and Psychic, or to raise Nano Skills a bit to cast a nanoformula which otherwise you may not be able to execute. Also by wearing 2 of them your Health and Nano is increased +300 with the low requirement of 321 in Intelligence and Psychic to equip.
Note: These days it may be easier to buy them from other players, or buy the parts from other players to save some time, but it won't be a cheap purchase.