Buy It Now: $17
Here is a tool for those of you who are conservation-minded or just tend to hang in the shower too long. Program your Water Pebble to tell you when you should be finished with the shower so that you have enough time to make yourself beautiful before you head out to face the cruel world. If you spend too much time sobbing and cursing what your life has become with the water on full blast so your roommates can't hear, the Pebble is going to let you know with cool light-up effects. Our first thought when hearing about this is that our water bill-obsessed parents would have loved this while we were growing up. Then we thought about if for a second and concluded that this would have just been another device to ignore, just like our alarm.