This is surely one of my favourite decoration and fragrance.
First of all, get an orange and cut it into a half. Then, take out the inner parts and leave only the orange skin. Then, put a tea candle into the middle .
Now, get the other half of the orange, and do the same ( take out the inner part- orange fruit ) and now, cut a small circle at the top. It is necessary, because your candle requires oxigen, and otherwise, it wont get it. For decoration, and of course for better smell place clove at the top of your orange. Now, you can light your candle, and enjoy your lovely vision and fragrance.