Oh YES you can! This list of Homemade Curtain Rods proves that you do not have to go into debt to decorate your home with lovely window treatments. These DIY Curtain Rods are all about thinking outside the box.
12 Homemade curtain rods More
How to make pretty finials (the thing on the end of a curtain rod) to go with your homemade curtain rod.
How to make cheap curtain rods. Also includes instructions to make rod brackets for cheap!
How to make a cheap, awesome, professional Curtain Rod