(I am bit behind on this - these were actually complete three weeks ago).
A short history of my installation of ollas (clay watering pots):
(The Whys and Wheretofores are covered there.)
If this pictures looks familiar, that is because it should be: 20 clay pots, 20 bases, 20 stoppers. Estimated cost per completed set up: $2.47 + tax.
Learning from last time, I looked at each of the pots at the Big Box store to make sure the hole was more or less regular. I picked through every pot (well over 100) to find 20. Suddenly I reminded myself of my maternal and paternal grandmothers, who would look even at the cheapest of items for a bargain. And here I was, examining $0.99 pots for fit.
After plugging the whole with a stopper, they go into the ground: