Adding a lil’ sound to the yard with the babbling brook This is my moms house where creativity is everywhere. She has a waterfall and count them two ponds fed by it and has a few frogs and several fish and some very beautiful flowers along the way. As a gift I built a plastic rock into a speakerbox and wired it to a switcher and her office stereo and it was about 60 in materials versus the already built speaker/rock boxes they sell in the stores for more than $200 per box and still have to be installed.