>>388805128
Consider adjacent questioning interjections. Maybe that counts as insightful for you but generally I've found that asking simple questions about the current topic (even if I know the answer or don't really care) can be an effective way of helping to continue a conversation, particularly with people that like to talk or are talking about a topic they're passionate about. Sometimes you can actually learn a lot from what they say but be careful of trapping yourself in conversation without an escape.

For example if we're talking about avatars and someone mentions that they made their clothes from scratch you could ask what they made them in or how long it took. Those are simple, safe and don't carry much risk derailing the conversation in a bad way. This also leaves open the opportunity to compliment or reassure them depending on their answer. The only downside is that you need to be quick to get them into group conversations.