Color Your Own Letter To Santa. Teach your kids how to write their letter to Santa Claus with our Color Your Own. Letter To Santa sheets. They'll love filling in the blanks with all their Christmas wishes. And when they're done writing the fun has just begun. Use your own markers colored pencils or crayons to fill in the festive shapes to make their letter to Santa really stand out. We recommend using crayons colored pencils washable markers or permanent markers sold separately online. Paper. (50 pcs per unit) 8 1/2 x 11