Hi Mel, I've made Christmas stockings in the past, mostly for gifts and one for my dog which comes out every year. They take little time and fabric and I think they're so effective. I reckon I probably followed a YouTube tutorial and this one was still saved, so it's probably the one: youtube.com/watch?v=OjOgSfTy7oo
Another great, simple idea is cushions covers! I learnt this from my grandma and mum, they cover most of the cushions in the living room with Christmas ones (made by my grandma 😍) this time of year and it instantly make things festive. It's just two square of fabric and a zip (or two rectangles and you make an envelope cushion cover) but it's all about the fabric. There are some really fun prints out there. I hope this helps! Alma x