I saw these cute silicone skull and crossbone ice cube trays at Michael's and just had to use them to make some Halloween soap! I wish the clear melt & pour soap that I used was a bit more transparent but the smoky/hazy effect works okay, I think. Also, I should have mixed the glitter INTO a layer of clear instead of just sprinkling it between layers. Although it's all holding together, it separated a little at the edges when I cut it. Just things to remember next time... :)