Some Bangkok taxi drivers love collecting coins and displaying them on the front of the dashboard and on the car's ceiling. It's interesting to see the various designs on the money, and to think about the international passengers who have taken a ride in the cab. It's also fun to try and guess the origin of the different currencies.
During the conversation in the cab, I joked with the driver and asked him if he likes to collect Thai baht, too. He replied by telling me that his piggy bank is completely empty, but I can contribute to his collection. I decided to give him an extra tip and dropped two ten baht coins into the slot of his piggy bank, and I also dug deep into my coin bag and found a quarter dollar from the States to add to his other collection.