We practice randori at various levels depending on the group's ability. The main focus is staying calm and relaxed (my sempai said you must be like the eye of the hurricane, remaining calm while surrounded by turmoil).
However, last night we did some exercises involving one nage being held by two ukes. The ukes would take a firm two-handed grasp on one wrist (so ukes are standing on either side of nage). Then nage applies technique to escape from both ukes.
Perhaps these are common exercises, but I was awed since I hadn't seen them yet in my limited training. Anyway, next time MIB come up on either side of me and take hold of my arms I will know what to do