2. ... or to your mom so she can finally see the light
Alternately, if a Luddite adult has been thinking of taking the plunge into the world of smartphones, your old iPhone may help him or her get over the hump. If you have an iPhone 4 or 4S, you might also find someone who's still hanging on to an earlier model and give them the gift of an upgrade. You may just buy a friend for life (or at least until iPhone 6 comes out).