You can use glass pebbles, bits of broken colored wine bottles or any other bits of colored glass. Check out the great tutorial from Made With Love By Hannah.
![madewithlovebyhannah](https://thehomesteadsurvival.com/wp-content/uploads/2013/02/computercab-300x225.jpg)
Click here to read how to create this project:
http://madewithlovebyhannah.com/WordPress/?p=49