I don't own a car and I live in Guatemala, I have to take the bus everywhere I go (or a taxi). I love glass money jars that you cannot get into. I put my bus/taxi money into my 'long term goal' jar every time I walk instead of taking the bus. There are days I may walk 5+ miles!
If you drive everywhere, biking would be a good option too, and that might be quite a bit of gas money getting thrown into that jar for when you reach a goal or a special day!