<p>Use a chemical reaction to put a silver mirror coating inside a glass ornament. This is the method used to chemically silver mirrors. It results in a beautiful keepsake silver ornament.</p><p>You can grow the crystals for this sparkling ornament in a few hours or overnight. Make lovely snowflakes that won&#39;t melt!</p><p>These paper atoms are like paper snowflakes, except atomic-looking! Make and hang them anywhere, anytime. They look great for the winter holidays.</p><p>This is another holiday crystal growing project that only takes a few hours to complete. Coat a Christmas stocking or other porous decoration with tiny glistening crystals made from a common household ingredient.</p><p>Use a redox reaction to plate copper over galvanized wire or a galvanized shape (e.g., a star) to make a shiny copper holiday ornament.</p><p>This crystal decoration is shown in a snowflake shape, but you can make it in any design you like. Grow crystals around a shape, but include an extra ingredient so your crystals will glow in the dark.</p><p>You can grow borax crystals over a heart shape just as easily as over a snowflake shape! Make a sparkling crystal heart for your holiday.</p>Cut paper snowflakes from coffee filters to use as a base for crystals. This is a crystallized twist on the classic paper snowflake project that produces amazing shimmering decorations.<p>This is another easy crystal decoration that you can grow overnight. If you grow the crystal around a glittery or metallic pipe cleaner, you&#39;ll get a twinkling star. You can get a different interesting crystallized effect if you grow clear crystals around a colored core.</p>You can use a small dry starfish or a shell as the base for your crystals. Starfish produce very sparkly decorations or holiday ornaments. It&#39;s an easy project that you can complete overnight.