The "Boys" like to change the Christmas Lights too!

One useful item for testing (and "messing" with the neighborhood kids! ;-) is the X10 remote control. I have a wireless receiver plugged into an outlet and with the remote, I can send commands to it that are then relayed through the house wiring to the various X10 control units - all standard X10 stuff. I don't let 'em do it very often, but my kids like to play with the remote as can can be seen here.

Look closely at the upper windows

boys in the window 1 does a zoom in for us! ;-)

boys in the window 2

Here's what it looks like from inside the house! ;-)