Hello there Aussie. Are you bothered by foreign coins in your change?

Like maybe some filthy coin from fiji or kazakstan taking up space in your pocket but not contributing to your wealth? this happening to me TOO MANY TIMES now! Just now I am arriving at vending machine for snack and guess what go wrong? My aussie 10c is not accepted because its a NZ 50c!!! exactly almost but not entirely same size and same queen but value = 0 and big disappointment to me...now I cannot afford delicious chips from vending machine i have to eat warm can of sardines I find in my office drawer...my day is ruin...my mood becoming dark...do you have sameilar experience like this?