Archer squats 3*8 (each leg)
Single leg deadlift 3*10 (each leg)
Glute bridges 3*15 (each leg)
Calf raises 3*15 (each leg)
Also on whim, I tried reverse nordics. And surprisingly I was able to do its negatives and a few partial reps. I thought it was a long way till I got to them, and I could also do negatives of pistol squats without losing balance. These were quite new discoveries for me.