I had a super time at Lee's party and was well appreciated by his guests, even though my voice was breaking up.
Effects that got the best reactions I think were:
Permanently inverting a chosen card,
Two chosen cards appearing in a glass and also on the card box,
Stealing someones's phone number and transferring it to my phone,
Hacking into the house wifi to reveal a chosen card,
Lie detector test with a coloured cube,
Signed card to wallet to locked box,
Sherlock Holmes book test,
Mind reading a card openly selected from a face up deck.