How I travel: budget

My budget doesn’t look like a regular travel budget. I am learning to travel the frugal way.  I can sleep in 12 bed dorms without AC. I slept on a floor in New Delhi, on a rooftop in Udaipur and in Shanghai Airport. I couchsurfed in Seattle, Shanghai, Dubai and Ho Chi Minh. Inside cities I prefer to walk if it is up to an hour. I overcame the shyness of spending 3-4 hours on a coffee so I can get wifi, plug-in and have some quiet time. No need to pity me. I find this vagabonding style of travel romantic, interesting and character building. I highly welcome and cherish any suggestion of how to spend less.