Move to cheap countries and live there. In many countries the minimum wage is 200 - 300 USD. So you could live 'comfortly' with 500 USD. That is what a lot pensioners from the UK doing in Thailand also. But they are kicked out recently cause they don't have enough money with the weakening pound. So they move to Cambodia or Philippines. So if your pension doesn't make it where you are now, move to the Philippines
