Several companies offer bicycle tours of Bali. Down mountains, off road, through rice farming areas, they are the best way to see the villages of Bali and meet the people, much easier to get off your bike to take a photo.  You are not adding to the polution by riding a bike and you are getting exercise and out in the countryside.  The downhill cycles can be a little scary, there are many companies doing cycle tours from Kintamani, just ask about how old their bikes are and about their safety record first.  There is also cycling aroung Lake Batur, where you can get some great photos of Mt Batur.