fruit picking, dishwashing & working under the table

me and my wife are trying to plan a RTW trip ...and we're one of "those" types. skilless and clueless. i know many of you hate those types but anyways...

.....what countries/cities worldwide are easiest for americans to find menial work - without work visas. ...no wage is too low for us to consider.

would love to hear from those who have experience finding and doing this kind of work.

Methinks you do yourself down! Why do you want to go without a working visa? The expense of it?
I am sure you could get temporary work in the UK in an office for around $11-13/hr. Probably similar for barwork... and more likely to get that "under the counter".

But come on! Surely you have some skills that could be of use someway or another? What do you do at home?

from what i understand, americans as individuals can't apply for a working visa - an employer must do it.

#1 Unfortunately US barriers to immigration are reciprocated the world over.

Hmmm, forgot about that... easy to do when you live in "Eurotopia" :S