STONE BY STONE-Mosaic House Number Kit. This kit allows you to make an elegant mosaic house number right in your own home and because the stones can be cut with scissors; it's a great project for kids to do also! This kit contains all the materials you need to make one house number: mosaic tiles; one wooden board; three templates; glue; grout; sponge; mixing stick; and instructions. Finished project size: approximately 7x8in. Conforms to ASTM D 4236. Recommended for ages 10 and up. WARNING: CHOKING HAZARD-Small parts. Not for children under 3 years. Imported.