This is a housing for the clock kit I bought from BangGood. I bought this:
http://www.banggood.com/DIY-DS1302-Rotation-LED-Electronic-Clock-Kit-51-SCM-Learning-Board-p-956298.html
but they have since made a slightly different version. They now sell a box to go with it but what the hey - why not make it? It turned out really nice. The only thing I didn't like is that it only came as a 24-hour clock.

It came with plastic metric spacers but since I didn't have metric mating hardware, I used some #4 spacers, 5/8" long. The housing length is designed around this. I also mounted the switches on the front of the board accidentally but since it looked just as good, I left them there and made buttons to accommodate them. I bought 2.5mm acrylic sheet from McMaster-Carr.

Files are in Inventor format. Let me know if you'd like step files.