A sentence clock, full box edition with LED mounting layer. (German words edition)
Example: ES IST ZEHN NACH HALB DREI UHR
Which means: IT IS TWENTY TO FOUR OCLOCK
So the LEDs illuminate the words and you see the time as sentence.
I used 4mm plywood and 3mm LEDs. Holes for mounting and the power cable is included.
Alex just send me a modification, so I added "v2" to the new files.
(Laser)cut the wood. The layer with the letters is the front, the one with all the little holes is the mounting layer and the one with the single hole is the backside of the box.
Just add some LEDs and connect it to an arduino or any other electronic. Do some coding. Done.
Hint: While assembling just glue the middle layer first.
Version 2 has some more modifications and extra parts, I am pretty sure you will find out how assemble that one.