Any 'entertainment' recommendations for our school summer fair?

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My kids' school PTA is girding its loins for the annual summer fair. I'm looking into 'entertainment', and was hoping some local parents might have some recommendations?

We've had a Punch and Judy act in the past, and last year we had a circus skills guy (juggling, plates on sticks etc), which was great fun. We also have a parent who does magic - it's this sort of thing I was thinking of.

Any recommendations/ top tips from your school fair experiences would be gratefully received!