I think it would be helpful (also for avoiding pileing up junk in the mud) if worn off wands, staves and rods had a code that make em self destroy when they run off of spells.
You wave a xxx wand at mob
the mob is hit by the spell
the wand vanishes in a puff of blinding light
…or something like that :)
Either that, or, make it possible to recharge them.