A small Christmas mod that will allow you to open boxes with gifts like the Lucky Block holiday replacement. By opening boxes with loot, you can get, for example, new items or diamonds.
Christmas Loot Vases Mod for Minecraft 1.16.4
Either way, now you have a chance to get something really special. Boxes can spawn in your world extremely randomly, so try to collect the maximum of those that you can find.
Download Link: Loot-Vases-Mod-1.16.4