OK, let's recap the vocabulary from this programme, starting with mucking about, an informal way to say playing with something carelessly, not for a serious reason.
We are going to continue working in the response phase doing mucking and gutting and debris removal, and sanitizing homes and begin to accelerate more of the recovery and rebuild work that we do.
After the year 2000, 3D printers suddenly got much cheaper and tech companies started mucking about with them – spending time playing with them in a fun way.
I would describe it as a game where you take on the role of a character and sort of pretend to be someone else for a bit, mucking about in a fantasy world with your friend.