Years ago, I needed to find a simple contraption that would turn into an addition machine. I was a special education resource teacher and all my teaching supplies had to fit on a cart or a rolling suitcase. I hit the hardware store. Apparently, I chose a P trap with a cleanout spout. I had used these same p traps before, but I used them for whisper phones. You can find the perfect size for kids and adults. The beauty of these p traps is that you do not have to do any prep for them to work…
