Wedding after party entertainment suggestions

Getting married on Saturday 24th August, very low key, only close family and friends. Having a little get together afterwards, hired a small hall out. Going to have a little buffet, have got some music but that's about it. Any suggestions entertainment wise on what we can do? Never hosted anything before nor have I been to any real "parties" so don't have a clue where to start! My partner thinks the food and music will be enough, people will entertain themselves chatting but I feel that we may possibly need a bit more to roll with. I don't think anyone expects much but I don't want anyone getting bored either. Your suggestions are appreciated!