All it takes to make delicately scented tablets is a little mixing, some gradual spritzing, and a few minutes of molding. When you're finished you'll have dozens of effervescent treats in a variety of shapes and colors that will scent and soften bath water as they bubble. Stuff stockings with cellophane bags filled with stacks of the colorful blocks. They make great gifts for all the ladies on your list, including mothers, grandmothers, aunts, and grown-up nieces. Experiment with colors and scents; mix yellow and red to make orange, for example, and try blending lemon with lavender.