I like the breakout rooms. In our congregation, you can choose one of the breakout rooms (numbered consecutively from 1 to 10) you want to enter before the meeting and enjoy a conversation with one more brother/sister or a small group of them (usually not more than 5 in one breakout room). After the meeting we are distributed by a random generator into the several breakout rooms for 5 minutes, then we are "shuffeled" again for the next 5 minutes...etc.
Before we agreed to this procedure, it was very hard to have a "normal" conversation before the meeting, because we are about 100 people! It was a big mess - EVERYONE was talking at the same time, the only thing you gained from those "conversations" was a headache. Now it´s much better. For example, I usually meet with the same 2 sisters in one b-room before the meeting, and we can have a nice small-talk. Sometimes one or two more people join, sometimes it´s just the three of us. After the meeting, I stay for 1-2 "random mixtures" and so overall I talk to 3 - 8 different people every time, having funny conversations and encouragement within the breakout rooms.