To make a wine cork Christmas tree, you'll need to gather a few supplies. First, you'll need a large pile of wine corks. These can be collected over time from opened bottles of wine or purchased in bulk. Next, you'll need some glue, a small tree branch or dowel for the trunk, and some decorations like beads, ribbon, or small ornaments. Once you have your supplies, you can begin assembling the tree. Start by gluing a few corks together to form the base of the trunk.