Well its mostly about being willing to do jobs you hate doing.
Fast food places for example will usually hire you same or next day, so hire on there, work until payday, ask them to send your last cheque to your parents/family/friends or just tell your boss that the coolest person you worked with gets it.
Or you can just busk your way around. Or sell jewellery or other things.
These tips work best if your travelling in a small van or big car. Those huge tour bus RVs are meant for rich people and old people.