Possible ideas for major project...

Light up clothing. - intro how to add EL wire to a coat or other garment.

This link has a "how to" of how to actually make clothes with light up sections by using El wire.

http://www.instructables.com/id/how-to-add-EL-wire-to-a-coat-or-other-garment/

LilyPad Arduino TBC

http://www.sparkfun.com/commerce/product_info.php?products_id=8617
http://arduino.cc/en/Guide/ArduinoLilyPad




Pong LED game.

This game is constructed of a board of LEDs. It replicates the effects of a pong game.

http://hacknmod.com/hack/arduino-powered-pong-on-an-led-matrix/