I've always been fond of performing a little magic (but not too much that I appear geeky of course...)
www.magictricks.co.uk - This website has LOADS of excellent stuff to buy - a little wishlist of my own:
1. Levitate - saw David Blaine do this on TV - wow!
2. Cups & Balls - a great classic.
3. Healed Coke Can - an empty crushed can appears to heal itself into a normal unopened full can of drink!
4. Amazing Magic Set - Traditional 75-trick magic set - includes Cups & Balls.

Feel free to buy any of these for me - remember orders over £20 get free shipping... ;-)