A) 2 Deadlifts, Power Cleans or Power Snatches EMOM for 18:00. Start at about 70% and increase when/if possible.

B) Every 3:30, for 6 rounds complete:
20 Wallballs (30/20) or 30 Wallballs (20/14)
4-6 Muscle-Ups, 8-10 Pull-Ups or 12-14 Ring Rows

Other options:
2 rounds every 7:00 for 21:00
3 rounds every 10:30 for 21:00