Presse papier marbré au vernis à ongle - Marbled Paperweight DIY. These pretty rainbow rocks are perfect for brightening up your desk! With just some nail polish and water, you can transform an ordinary rock into your own marbled paperweight.
Make colored sand art by stirring a chalk stick in a bowl of salt. it changes the color. Stir less for light color and more for dark richer color. (I used to do this with salt and food coloring. but the chalk stick idea is brilliant!