you will need a few things for this build. start by getting all these items.
4 sheets of 1/8" thick 18" x 24" acrylic - (not 1/8 but close enough) http://www.menards.com/main/building-materials/sheet-acrylic/clear-acrylic/100-18-x-24-clear-acrylic/p-1458022-c-7552.htm
super glue or acrylic adhesive (if using super glue watch for finger prints)
4 "AA" battery holder (this one includes a switch which is nice) http://www.radioshack.com/product/index.jsp?productId=2062253
2 ( or how every many you want) LED's http://www.radioshack.com/product/index.jsp?productId=3060980
resistors ( i used 270 ohm, may change on your set up)
preprinted circuit board,i used this one because it cut down on some soldering http://www.radioshack.com/product/index.jsp?productId=2102845
one can of spray glass frost http://www.menards.com/main/paint/paint/spray-paint/decorative/rust-oleum-specialty-frosted-glass-spray/p-1482521-c-8046.htm