Some DIY cup holders themselves, but an easier way to add a cup holder to a swing is a cup holder attachment. You can buy cupholder armrest attachments. Sets usually include the cupholder and screws. Installation requires a simple screw on the side of the armrest. The one issue with this is finding sets that match your porch swing. If you want to completely do it yourself, the easiest project is adding a solo cup holder. Once again, it’s easiest to work with wood. You’ll need five pieces of wood, some glue, and brads. If you follow this simple tutorial, you should be able to finish the project within an hour. It’s also beginner-friendly. Watch the DIY Cup Holder Tutorial Here.