No trick, Sheba <img src="/ubbthreads/images/graemlins/puppyeyes.gif" alt="" /> - I just prick my ears if I finish an enemy near a wall (hear if something falls) and then move my mouse patiently and slowly over the spot, the description shows up then. Another sign is a short flash, if the enemy drops something.
Kiya
Healing others with potions : impossible. But you can heal your scorpions with restoration, by right clicking on them and having the spell activated.
Picking up an single item in your inventory: drag it out and shortly before you let go, press CTRL - window pops up.