A non-invasive food additive that temporarily makes wives see Outlaw preamps/receivers as new ovens and Outlaw amplifiers as new dishwashers. Willingness to accept a simple "the installers will be here any day" story would also be one of the side-effects.

Effects of the additive would only have to last for 30-days or until the end of a typical Outlaw trial period, whichever is longest.