0 (get yourself to a retailer, my love!)
1-3 (I mean, this is acceptable, right?)
4-6 (I get it - one for the car, one for the gym bag, one for the...)
7-10 (You're more of a collector, aren't you?)
11-13 (I'm considering taking out an insurance policy on them)
14+ (THERE WILL NEVER BE ENOUGH)