If you want to splash in a giant puddle, just leave the spigot open in your backyard. A spigot is a faucet, a device to turn water on and off. If you leave a spigot open, the water will keep flowing.
In the U.S., most of us call an indoor valve (in the kitchen or bathroom) a faucet, and the outdoor one a spigot. In other English-speaking places, a spigot is a plug inserted in a cask, or one end of a pipe. It's not uncommon for this word to be pronounced “spicket,” with some dictionaries including that as an acceptable way to say it.