Hey Mom,
I have a 5 foot round kiddie pool, but that is being used as a brooder right now. I'll keep an eye on the thrift shops in case I can find a couple more. Long term I have a liner for a 9x16' koi pond but don't want to start that project until I have the budget and material to complete it.
Ren2014,
I built this "Quack Shack" for the ducklings out of fencepost material, Ondura roof panels and 2x4s. It is 10'x10' and attaches to the first duck house I built out of old wood fenceposts (looks like a miniature log cabin). At 100 sq feet, that gives each duck roughly 4 feet each...