For me, it's tiered trays. The kind you stick decor on to display. I don't have any but I so badly want one. But.... I know that I don't need it and that it will just be something else to manage. I even went as far as ordering the tray off Amazon and some decor from Etsy but had instant buyer's remorse and cancelled all the orders.
What is something you know is a "fantasy self" item that you just can't get rid of or that is a WANT instead of a NEED?