I've heard a lot about how well timers work with kids - for things like giving your child a set amount of time to clean up, get ready for bed, etc. Generally a kitchen timer is recommended. Well, I've found that kitchen timers are not really that great. We have a manual Oxo timer that goes from 0 to 60 minutes. However, most tasks for Kenny would take no more than 5 minutes, and it's difficult for him (as well as for me) to tell how much time is left on the timer. Plus, there's no warnings when he's getting close.
So I've been searching around online for something else. I found the Learning Resources Time Tracker on Amazon, and was really excited to see it - it looked like exactly what I wanted to find, with a light that starts out green, goes to yellow, and then red when time is almost up. What a cool idea! Then, however, I read the reviews. Some of them were very positive, but many were quite negative, and vociferous about how poorly designed it was and how hard it was to use.
So, the search goes on. Please let me know if you find anything cool!