We made borax snowflakes, it was really easy and fun. We made 4 of them and gave them to grandparents when they visited. Our biggest challange was finding a jar with a wide enough mouth. I copied the directions from about.com
1.Cut a pipe cleaner into three equal sections
2.Twist the sections together at their centers to form a six-sided snowflake shape. Don't worry if an end isn't even, just trim to get the desired shape. The snowflake should fit inside the jar.
3.Tie the string to the end of one of the snowflake arms. Tie the other end of the string to the pencil. You want the length to be such that the pencil hangs the snowflake into the jar.
4.Fill the widemouth pint jar with boiling water.
5.Add borax one tablespoon at a time to the boiling water, stirring to dissolve after each addition. The amount used is 3 tablespoons borax per cup of water. It is okay if some undissolved borax settles to the bottom of the jar.
6.If desired, you may tint the mixture with food color.
7.Hang the pipe cleaner snowflake into the jar so that the pencil rests on top of the jar and the snowflake is completely covered with liquid and hangs freely (not touching the bottom of the jar).
8.Allow the jar to sit in an undisturbed location overnight.
9.Look at the pretty crystals!!! You can hang your snowflake as a decoration or in a window to catch the sunlight :-)