Honestly with remote work I don't find it all that important, we've tried at various stages in the last few months to set aside time to virtually chat - but it just feels like enforced fun and whats worse is that group video/audio calls always end up with 2 colleagues being able to chat at once.
We have however done a few remote team building challenges, which I was prepared to hate - but actually they've been really enjoyable and have certainly lead to some better friendships being formed ! If you office or workplace offers them out then I would highly recommend them, even if it seems like your personal idea of hell !