Plasmoids are the widgets that you put on your task bar in KDE.
The Grouping Plasmoid lets you group multiple widgets together on the task bar.
To add one you right click on the task bar and click on the “Add Widget” button. Then find the Grouping Plasmoid and drag it to your bar.
When wood is properly sealed up in walls, it lasts a very long time. We don’t really have buildings on an old world timescale, but we do still have colonial wood frame buildings.