p.s. Searching for "Santa Cthulhu" on the UK gives you a recommendation to read:
Cthulhurotica, which I see is only $3.99 on
Kindle (US). Sadly, there are no Cthulhu Santa's on the US site, either, but I did turn up a
Christmas Card (one of many, it seems; who knew Cthulhumas needed so many cards?) and a
Christmas Calendar App you can order, to keep it company.