Those artificial fireplaces!
I bought an artificial fireplace (runs by electricty) when I bought my townhouse and it's great as a piece of decor in the winter time. The fire looks real. But a real fireplace would add value to a home, I think.
A two car garage would also add value, so would a large home office with built-in shelves!
The electric fire I get from my artificial fireplace looks real. It's kind of handy actually. You just push a button and voila! No need to gather firewood or to clean it afetrwards!