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DIY beach glass bottle
website gives great craft ideas
How to make blue sea glass! Painting bottles this color, glue, water, dish soap, food coloring. The only problem is you can't get the outside wet after painting.
DIY sea glass paint.
DIY Beach Glass Supplies: Blue & Green Food Coloring ( I used the Neon colors from McCormick just because I like how intense the color is) School Glue Dish Liquid Water Paint Brush Glass Jars, Bottles, etc.