Smoking stem or cannabis leaf

At some point you many run out of your favorite bud or herb and all you have left is the stems and some leaf and you start to ponder "Hmm maybe I should smoke the stem or leaf its still part of the same plant" well being part of the same plant yes, but you have to take into account the THC level. The content of THC in the stem or leaf is very low and not even worth smoking. You can make hash from stems and leaf but the only way to do this is by using large amounts. Smoking little bits of broken stem or a leaf that fell off the bud won't do anything except make your head hurt.