In reply to Tom Blake:
> In my experience £20 per day will cover Thailand/Indonesia in reasonable comfort (2½ years ago), but it's also been totally fine for my current trip climbing in Europe as more of a dirtbag.
Yeah, it's pretty much a "how long is a piece of string" question! I managed to hitchhike and tramp in Europe for two weeks with 60-odd Euros spent in total. A third of the total expenses was... booze!
Granted, I was lucky few times and I got few nights under the roof through CouchSurfing and some random strangers letting me in to sleep at their homes. Few snacks and lunches bought by drivers, too. One of the driver's family trusted me with a 10 month old daughter, bought me a train ticket and gave me some cash as they weren't planning to visit Czech Republic any time soon.
Was I ambitious and determined? For sure.
Was it comfortable? Nope.
Could I do this again? Certainly not, even if I don't regret a single thing from that trip.