Party entertainment

I’m thinking of throwing a 40th party this summer for around 50 people. There will be lots of friends who don’t know each other , any ideas for some entertainment to help things flow and get the party started? I’m thinking magician etc buy not sure. Want it to be super fun and chic!

I love the idea of a pub quiz, but the teams are asigned so you potentially don’t know your team mates - there could be different categories where the teams have to work together and then they will just naturally get to know each other. Plus who doesn’t love a pub quiz?