Ok BIG idea here, This would be a perfect update for December
Winter - make it snow for a season maybe like 60 days in game or something out of like 365 days would be cool, aslo could be a cold factor to the survival part later where we need to build fire.
Snow - add a thin layer of snow like 1/3 of a blocks height to the ground and make it a bit slower to walk in. "like real life -_-"
Snow Shovel - swings fast like the rake and removes snow from ground and adds snow (Item) to inventory. Snow removal lasts maybe for 3-5 days in game
Snow (Item) - Craft Snowmen, Small Ice Hut, Cook into water (for the survival part), snow balls (X5 for 1) could do very little damage (Would be so fun with friends), Ice/snow blocks...All of these things melt when snow leaves
I put lots of thought into this xD to much time at work lol