To start this project, you’ll need a sphere. Any sphere will do. Two of the best candidates are floral foam from a craft store or a large Styrofoam ball. You’ll also need grout and tile squares. You can find each item in a crafts store.
If the floral foam has a smooth surface, rough it up with fine-grain sandpaper. If you use a Styrofoam ball, it will already have a rough surface. You don’t want to pull large chunks from your foam. You just want to create a surface that the grout will stick to. Put the ball onto a cup or bowl to use as a work station.
Decide the pattern for the mosaic tile on the ball before you mix the grout. You want the pattern set before you transfer the tiles into the grout. Once the grout is on the ball, you will have to work quickly.
Mix the grout according to the package directions until it is the consistency of gritty toothpaste. Spread the grout over ½ of the ball. You can use a trowel or paint scraper. Or you can put dish gloves on your hands and spread the grout without tools.
Press tiles into the grout in the pattern that you already decided on. Cover only the top ½ of the ball. Allow the grout to dry. Then carefully turn the ball over and repeat the process on the other side of the ball.
Mix more grout according to the package directions. Spread the grout over the top of the tiles on the top ½ of the ball. Work the grout into the space between the tiles. Let the grout set for a few minutes. Then sponge the grout off of the top of the tiles. Leave the grout in between the tiles. Allow the grout to dry. Then turn the ball over and repeat the process.
You can display your ball in your container garden by nesting it in a pot that has a smaller diameter than the gazing ball’s diameter.