Mathom sounds like something out of The Meaning Of Liff, but it’s not. Apparently it’s a word from Tolkien meaning something you have no immediate use for, but which you want to keep just in case. In the stories, the Hobbits sometimes had entire extra houses dedicated to mathoms.
This sounds just like my mother. There’s lots of stuff at her house, but even more at Peter’s block at Ferntree Gully, where Peter built a big shed just to store stuff they don’t yet want to throw out.
I think they might be closet hobbits.