Beginner:
Advancing punch
Drill: eyes closed, partner holds pad either in normal punch range or a step out, partner has to open eyes and make the appropriate punch.
Choke from behind with a push
Drill: Groups of 3 - Defender starts eyes closed, pad holder says "hey!", Defender makes and advancing punch followed by a punch flurry, 3rd person comes up from behind and makes choke from behind with push, defender defends, then resets.

Intermediate:
Front Bearhug day!
Bearhug front arms caught
Bearhug front arms free (with space)
Bearhug front arms free (no space) leverage on the neck
If time - Bearhug front (lifting)
Drill: Divide the class into A/B. A's close their eyes, b's attack anyone in the room with a front bearhug.

Advanced:
General defense V. medium to high kicks
Sliding defense v. high round kicks
Gun from behind touching
Drill: light sparring including high kicks, at any point an attacker comes up and holds a gun to the defenders back, defend then go back to sparring.