To get some cash for my playtime I bring to work desserts that my wife makes and sale it to coworkers (my wife is a great cook), she thinks I eat it all at work (with all those sweets I would not keep the figure that I have). As for the phone I simply replace the phone number of a friend which I keep is name and put in the phone number of the sp and the wife never suspect it. If I need to call my friend I know is phone number by heart and just dial it.
BTW my wife does not see my phone bill but does answer my phone or checks out who called me once in a blue moon.