Marbling notecards with nail polish + water. You have to use a lot of nail polish and do it really quickly before it all bonds together. My attempt wasn't half as pretty as these but thanks for the idea
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.
supplies Basic white ceramic mugs Nail polish (the dollar stuff is fine) Wooden skewers or toothpicks Warm water Disposable pan or bucket (it will get ruined) Nail polish remover Cotton balls or cotton pads More info and instructions about this great tuto