It is good to stand up once in a while especially since I spend so much of my time, sitting in front of the computer. The switch turns on when I stand up and my leg makes contact with the table.
I have taped aluminum foil to the table and to my thigh and they are connected with alligator clips.
If I could program it, I would add a timer that caused the LED to start blinking after a certain time period and only stop blinking after the LED has been on for another period of time.
Hope you like it!
This is the schema but instead of using a switch, I used aluminum foil and connected them with alligator clips.