On the 15.1.2015 they also changed the policy from fixed EUR/CHF exchange rate to negative interest rates to reduce the influx of money. Currently the rate at which the SNB borrows to the banks is -0.81% [2]. A friend of mine pays a premium of 0.75% on the base rate for his loan on the house, so the currently borrows from the bank at -0.06%.
So what else could you do with your CHF? Buy Swiss Confederation bonds, the current yield is also negative, -0.28% [2]. Or buy EUR, more risky but more interest? Put under your pillow, too risky? Exchange to gold, pay for insurance or to keep it safe? Bonds of a country nearby? Only 0.46% for 10 years in Germany [3] and in EUR.
[1] http://www.snb.ch/en/iabout/stat/statpub/zidea/id/current_in... [2] http://www.snb.ch/en/iabout/stat/statpub/zidea/id/current_in... [3] http://www.deutsche-finanzagentur.de/de/factsheet/sheet-deta...