This might just be one of the simplest DIY projects on this list. Just stuff some fairy lights down into empty bottles or jars, and you have your new favorite decoration. These look great in just about any home, but they look especially good in your room. They can also work in place of a lamp so that you have a bit more light. This photo is seasonal but really, you can use them all year round.
If you have an outdoor party coming up, they also look really great on a table outside, especially in combination with other hanging lights or outside candles .