The combination of "legacy" and "seed". A legaceed is someone you have given birth to. They are both your seed (literally), and legacy (literally and figuratively). Additionally, a legaceed can be someone who is entirely unrelated, that you have "son-ed", such as a good friend.
Kim and Kanye's legaceed will probably be the Antichrist.
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2 million.