Need a new idea for your kitchen? I had a bunch of sea glass left over from the decorations we used in our wedding and I wanted to use it in our house. I went out and bought some grey grout and went to work. I used a putty knife to smear the grout all over the wall. I kept smearing until I had a quarter of an inch of grout on the wall. Before the grout had time to dry, I stuck the sea glass into the grout.