Capital Kiwi : You put MONEY in VENDING MACHINES?

Oh, yeah. And in parking meters, public telephones, toll road baskets, laundromat washers and dryers ... so if you travel in USA, find a Bank and get a couple of rolls of quarters ($5 per roll) and bunch of one dollar bills.
Some vending machines are set up to provide change but not all are ... and sometimes the machines which are supposed to give you change do not ! so I make sure I have a few $1s on hand at all times!
When travelling, the ashtray is a handy place to keep the quarters and a few $1s.
wow