Any achievement or milestone that one completes during the free time they have due to the lockdown conditions necessitated by a pandemic. Applies especially to something you've been putting off for years.
"Hey, honey, I finally got the gutters cleaned!"
"Good for you, sweetie! That's quite a panchievement! Tomorrow you can start sorting out that mess of a garage!"
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 $2million.