The Treadmill

Since I started losing weight, the treadmill has been my best friend...but now I am starting to get bored with it.  I have found it hard to motivate myself to get on the treadmill because I get so bored with it now, so I need to find an exercise on the treadmill that will help motivate me again.  If anyone has suggestions I would love to hear them.  I am selling my elliptical in hopes of getting a stationary bicycle as I love working out on them, so I hope changing up my routine will help with my boredom.  Also, the weather has sucked so I haven't been able to exercise outside and that's been rather depressing...like today it's pouring out and cold which means I will be stuck on the treadmill...