After testing about a dozen drills, I finally found two that tested well - Sumo DL (not a surprise) and Bent Press (a long, lost friend). I set the timer for 20 minutes and alternated between the two.
Sumo DL - two 24 kg (106 lbs.) - 87 reps
Bent Press - 20 kg (44 lbs.) - 22 reps
I bet it's been five months since I did bent presses. I love those, and they'll help me with my pullup progress. I should have been testing them more often.
After the heavy lifting, I decided to go for a barefoot run. I ran for twenty minutes. It felt great to loosen everything up and just lose myself in my thoughts. Great stress reliever.