Cheap-ass 25c Wall Clock
The only thing you need to buy is a cheap Chinese clock machine. It costs 25c each with the needles, 5c less without the needles. Buy one with needles, and a dozen sans needles. They break or get slower after a year, so dump it each time it breaks and put on a new one.
Supplies
Just a cheap Chinese clock machine. You should have the rest somewhere
Tack it, glue dots, double sided tape, or anything you can use to glue something to your wall.
Print Out a Clock Pattern
Print out a clock pattern. Use mine if you are too lazy to find one. If you want a bigger clock, separate the pattern into two, then glue them together.
Downloads
Cut
Cut the middle of the pattern. It should be about the same size as the clock machine.
Stick It
Stick the printed clock pattern, slap some tack it to the back of the clock machine, adjust the time, then stick it right in the middle of the clock pattern.
That's all, folks!