Simple DIY interval timers, anyone?

11:37 am in electronic components, environmental impact, How-Tos, kits by offlogic

Is there any interest in a design for a simple 5-10-15 minute/hour pump timer?  I can put together a little how-to (or even a kit with a printed circuit board) if anyone else is interested.

Just a simple AC plug that turns on once per hour for a user selectable time interval, lots cheaper/simpler than a  programmable timer (ie Intermatic) with the display and keypad. Minimalist is what I’m offering.