Where's the Plug?

Tonight's bath came to a screaming halt, when we couldn't find the plug. We looked high, we looked low, we looked everywhere including our bathroom and all over the house, but it was no where to be found. So bath time turned into shower time, which is a fairly new concept for the twins. They warmed to it slowly and after some time realised you can still have as much fun in there as in the bath...problem solved, now where is that plug!