A fellow teacher, (thanks Mrs. McDonnell!) shared this with me & now I use it every chance I get. Remember in the old days when you had to buy that really expensive timer to stick on your overhead projector to use a nice visual timer in your classroom? Okay, so I realize it may not be that long ago for some of you. It may actually be yesterday. Anyway, if you now have an LCD projector that you use frequently, then you have a great timer available.
Here's the main site Online Stopwatch
You have options to choose from as to how you'd like your timer to look.
Above, you'll see the Egg Timer.
Below is the clock countdown:
They all make a ringing sound when time is up. The students I've used it with seemed to get a kick out of it.
You can either bookmark the site or download the program.
It's pretty neat if you have a need for a timer!