Ive had some great times with them during the build. They like to sneak out into the garage when im at work and "help".
once they spray painted a black streak down a thigh... it buffed out lol. they told me "Dad, I love you because you make the best stormtroopers". or "dad, are you making more bad guys"?
i hope its something they remember for years. even the wife is in on it. she can spot the difference between hero and stunt and ANH and ESB tk's lol.