Are you looking to ruin Christmas? It may not be so difficult as bringing up your uncle’s affair or your stepsister’s attachment to Mom’s purse string. It might be as easy as purchasing a Christmas ornament. Christmas is a gargantuan industry in the United States, and as with all gargantuan U.S. enterprises, there are many stupid products it produces. Here are some ornaments you really ought to avoid trimming the tree with this Christmas—unless you’re trying to cause a family blowup.