If you are going to goto the "Blink'n Light" presentaion (from 1:00pm to 
2:45pm Saturday) here is a parts list.  I am not sure he will have time 
to cover all these parts but if you have parts he will probably help you 
with them.

Parts list: Various LEDs (3mm to 5mm, assortment of colors to suit the
user's personality), resistors in the range of 460ohm to 1kohm, a minimum of
one per LED to be hooked up. For the daring, an RGB LED plus three
resistors. A photo sensor, a capacitor - 10 microFarads, a breadboard
compatible momentary contact switch. A DS18S20, and / or a DHT11 or 22. 
An Adafruit 8x8 bi-color LED matrix.

LEDs: http://www.adafruit.com/products/297
http://www.adafruit.com/products/754
http://www.adafruit.com/products/780
(you get the idea...)
RGB LEDs: http://www.adafruit.com/products/302
Bi-color 8x8 LED matrix: http://www.adafruit.com/products/902
Resistors: http://www.alliedelec.com/search/productdetail.aspx?SKU=70022897
http://www.alliedelec.com/search/productdetail.aspx?SKU=70022915
Photo cell: http://www.adafruit.com/products/161
Capacitor: http://www.alliedelec.com/search/productdetail.aspx?SKU=70186496
http://www.alliedelec.com/search/productdetail.aspx?SKU=70111898
DHT11 Temp and humidity sensor: http://www.adafruit.com/products/386
DHT22 Temp and humidity sensor: http://www.adafruit.com/products/393
DS18S20: http://www.alliedelec.com/search/productdetail.aspx?SKU=70127740
http://www.alliedelec.com/search/productdetail.aspx?SKU=R1036264

Wiring diagrams and other misc stuff: http://www.rpural.net

I believe you can order from adafruit and before 10am tomorrow (Thanks 
Susan) and it should arrive Friday!

==>brian.