Magical. It's the only way to describe the light given off by the rope lights we recently put up in our bathroom. While rope light is ubiquitous around the holidays, we like this look so much that we think it will last throughout the year.
We used two ropes (an 18' and a 24') for this design, attaching them to the wall with the included clips (and some drywall anchors). For ease of use we used an adapter to plug them into the light socket, so they work with the wall switch.
Rope light is easy to find this time of year. We picked ours up at Target but almost anywhere selling holiday decorations should carry it. It's also available from numerous online sources, including Amazon, which has 24' for $15.29.