Inspiration from here.
what you will need:
Any clock (I used an IKEA Clock (2 Euro))
Hot glue gun
I have to say from the beginnig that I used the clock above only for inspiration. My clock was also smaller so I included less spiders. I started by opening the clock - simply by popping the lid of. I used the clear plastic casing as a guide for circle size. Then I made lines for orienation, otherwise the numbers end up at wonky places!
Next step was to draw a spiderweb. I used a ruler for the straight radiant lines and added the web free hand. I did a pen sketch first and used a black liner to make the lines more prominent.
Since I found the numbers a little bit to small (our clock hangs above the door, so small numbers would harden it to read the correct time), I made them a bit bigger and used Edding to make them more bold.
Now you only need to cut a line to the middle and cut a little circle for the clock hands, then insert the new drawing into the clock:
One crucial step is to use invisible tape to close the cut again. Otherwise you will end up with one hand of the clock hidden under the paper and not moving anymore... You can see this here in my first trial version:
Just use a little strip of tape and you are set for the future!
Now add the clear lid again and you are mostly done. I glued on some plastic spiders for the fun of it. I used the hot glue gun with success, but any glue for plastics would work here I guess.
Hang the clock and admire your work!