Milestones decoration come in such a large variety that you won't believe your choices. They include metals shapes and letter, mosaic pieces and tiles, ceramic shapes, even glow-in-the-dark shapes. Now the question is, where do I start these decorations are great to add to outdoor decorations such as stepping stones, cement walk-ways, patios and fountains, or other craft decorations that you may be wanting to add a mosaic or glass design or simply place them in a glass bowl or vase for a colorful designer look.