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One Christmas MANY YEARS AGO I found some 'holiday related' rubber stamps in a funky non-chain stationery store, including one that said "HUMBUG". I acquired it and used it for a very personalized Christmas card alternative. Stamping it in red on a sheet of small green stickers, I placed them in a folder labeled "Holiday Humbug Stickers" with instructions on how to use to express your disapproval of anything that ruins your holiday spirit. Not a big project, because my Christmas card list was short - less than 30 people (half of whom suggested I make them commercially but none of whom had the capital to help me start that enterprise).
At the time I remember seeing other non-seasonal stamps saying "OOPS", "WHAT?!?" and "NO COMMENT", so it's not a new concept.