Inspired by these pictures by One Dog Woof here I set about making some crochet Christmas trees:
Mine are in DMC Natura cotton, colour 14 (Green valley) and the best ones were made on a 3.5mm hook in double crochet. The trunks are wine corks, but I did cheat a bit and cut some in half so they would fit inside the tree better. The stars are just long pins with star heads, and I think they work really well.
Sent with my very best wishes, and wishing you all a Happy Christmas.