I can speak from experience. That does not work.The trick is to throw it out when they are not home and if they actually miss it someday act appalled that they lost it!!
My wife had a table lamp with a shade made from cut glass. It was cheap junk with a broken piece of glass but her sister gave it to her so it was an heirloom.
I tossed it and she knew as soon as she walked into the room.
I caught hell for that.
My wife and I have completely different ideas of what's good stuff and what's crap.