Making money while on the road in Indonesia is not all that easy when you are thinking of traditional jobs. Picking peaches is not a possibility. Besides that they don’t grow in Indonesia selling relatively low-skilled labor cannot buy you sufficient gasoline for the day. So you will have to get more creative.
The answer is pretty obvious – make your money through the Internet. Either provide services in which Internet is just a tool to communicate (e.g. copy writing, coaching, personal assistance). There is a number of sites where you can sell your services through and get paid in US dollars. Alternatively do on-line work related to e.g. websites such as building them or perfecting their results, programming, becoming a Youtuber, an affiliate marketer or whatever else the Internet offers in opportunities.