Blinking Seconds:

Last august, I wrote about how I intentionally watch TV ads to time my thirty second exercises. Well I have an even better recommendation, and I bet you can use this one too. We have a VCR that usually blinks "12:00" at us. (I tend to stop that blinking by programming the correct time into the VCR shortly before the next power failure.) The blink cycle's about one second, so now, while exercising, any time I’m facing that way, I use the infernal blinking VCR to count seconds.