Mining Oliver Stephens' recent article in TennisPro Magazine for all it is worth! Here's a twist on a
Two players begin at the baseline. One bounce-feeds a ball and follows it in to the net. This player's job is to become comfortable following a ball in and works on his/her volleys and overheads.
The other player should hit the first three rallies as follows: two ground strokes, then a defensive lob (ideally playable by net player).
I have tried this drill and like it. I have found my non-feeding players tend to tighten up when they see the opponent charging into the net from the baseline. Teaching opportunity: to have them hit quality ground strokes as if the opponent were still at the baseline.