Reading 30 Arduino Projects Evil Genius by Simon Monk
Some great Arduino Projects there, like the lie detector, USB temp monitor etc
these hardware will be great for it
Arduino Sensor Shield V4 digital analog module
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=24778
Arduino Uno - Atmel Atmega 328-PU (Clone) http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=23767
don't go Torrenting for this book with this tittle '30Arduino_Projects_EviGenius', buy it legit from Amazon ;)
http://www.youtube.com/watch?v=vveFMiXuyLo
here is the amazon link for the book, in case you want to buy it ;)
http://www.amazon.com/gp/product/007174133X/ref=as_li_tf_tl?ie=UTF8&tag=ardui-20&linkCode=as2&camp=217145&creative=399369&creativeASIN=007174133X
while you are at it, read this book too 'Mind Performance Projects for the Evil Genius'
other available Evil Genius Book Collection
101 Spy Gadgets For The Evil Genius
123 PIC Microcontroller Experiments for the Evil Genius
123 Robotics Experiments for the Evil Genius
22 Radio Receiver Projects for the Evil Genius
46 Science Fair Projects for the Evil Genius
50 Awesome Auto Projects For The Evil Genius
Bike, Scooter, and Chopper Projects for the Evil Genius
Bionics for the Evil Genius - 25 Build-it-Yourself Projects
Electronic Gadgets For The Evil Genius Collection
51 High-Tech Practical Jokes for the Evil Genius
Electronic Sensors for the Evil Genius
Mind Performance Projects for the Evil Genius
Mechatronics for the Evil Genius
Recycling Projects for The Evil Genius
Solar Energy Projects for the Evil Genius
TinyAVR Microcontroller Projects for the Evil Genius
Nice collection..