Glass shelves are the modern alternative to wood shelves and even plastic and metal shelves. They give more style to a furniture or to a wall. An object on a glass shelf will be more prominent than one on a wood shelf.
http://ehomeguide.org/interior-design/glass-shelves-glass-shelving.html

The modern custom of using a Christmas tree can be traced to 16th century Germany, though neither an inventor nor a single town can be identified as the sole origin for the tradition, which was a popular merging of older traditions ..
http://ehomeguide.org/family-and-lifestyle/history-of-christmas-tree.html

Choosing a modern fireplace design can easily be achieved these days with the various materials available in the market, and design ideas from your local hardware store.
http://ehomeguide.org/interior-design/choosing-a-modern-fireplace-design.html