Asylum Sign

Mmmmm, Xacto knife. You'll need to cut your letters out 100 times to get a clean line, and buy some contact paper - oh, and lots of paint. Then paint details in reverse, starting with dark (since you're painting on the back side of the plexiglass). As for the box, you'll need a channel in the front for the plexiglass and a channel in the back for the luan that will make up the back of the sign (removable for service to the lights).