Sirui P306 monopod
I have not used this one, but I have had good luck with Vista Trailblazer. It is only $20, weighs about 1 pound, but has a height of 68" and is quite sturdy for the price, even fully extended. I place a rubber foot (from a walking cane) on its end and use it as a hiking stick. For the money it's great. I have made 3 trips to Europe with it and it has not failed me yet. When it does, I'll just buy another.