If you have nail polish in colors that you do not particularly like, do not give them away or toss them into the trash. You do not have to wear them. Even if the hues are hideous, they can be used in a number of ingenious ways both in and around the home. Despite how quickly it seems to chip away when applied to nails, it is extremely durable. Consider these creative uses for shades that you do not want to wear. You will save money while accomplishing a number of creative and practical tasks.
Mark Plastic Cups
Not all markers work well on plastic cups, even permanent varieties. It is still a smart idea to personalize each one. Beverages in cups that are not marked are invariably confused with others. Countless drinks end up abandoned and wasted. Use nail polish colors that you do not like to mark plastic party cups. Instead of having to wait for the enamel to dry, label the cups long before the party begins. Cover the dry markings with clear packing tape. They can be washed by hand and reused again and again.
Decorate Plain Bulletin Board Pushpins
Bulletin board pushpins do not have to be decorative to work, but color is always a plus. Color-coded tacks are can be quite useful, especially when the board is not very well organized. Use nail polish colors that you do not like to dress up basic pushpins. Add a dot of color, or create a simple design. Hues that did not look good on nails might look fabulous on a wall-mounted cork board.
Keep Fabric From Fraying
Those who do not sew can still prevent the raw edges of fabric from fraying, and they can do it without buying expensive products. Nail polish works beautifully to seal the edges. Save colors that you do not want or like for no-sew projects. The enamel does not have to be clear, but it should coordinate with fabric hues. Lightly coat the edges to keep the threads from unraveling. A small amount is all that it takes.
Secure Shirt Buttons
In some instances, nail polish can be used instead of adhesive. If you have problems keeping buttons on shirts, consider using fingernail enamel to hold them securely in place. Colored varieties can be used if they match the fabric. Apply a dot of polish to the tops of the buttons. The threads will seem to magically meld together, and they will not work loose, at least not as easily.
Source: Advanced Crafting Education and Experience