I saw someone on Instagram had made one but I cannot for the life of me remember who it was so I can't credit them with the inspiration unfortunately.
The method I used is very simple, just a big granny square and an amigurumi head of my own design. The head is sewn on to the blanket with black yarn. I blocked the blanket before sewing the head on to make it softer and drapier. See that? I just made up a word. I have to say, I think it turned out pretty well. It still needs a little fine tuning but I already have an order for another one so I know where to do things differently. Make sure I have yarn in all the same shades for example. You can't see it in the pictures but the first few rounds of light green are different to the rest.
Have some pictures!
Details for fellow hookers: 4mm hook used for blanket, 3.5mm hook for amigurumi head and 100% acrylic DK yarn. Blanket measures approx 56cm x 56cm after blocking.
I'd love some feedback dear readers :)