Take any Halloween container you would like to use for your Halloween candy bouquet and floral foam.
Using a knife cut the foam and place it into the container. The foam should sit firmly and a little bit lower than the rim of the container. If your container is light, for example a plastic one, you will need to add some weight to the bottom of the container, some rocks from your back yard will work.
Cover the foam with Halloween garland using floral pins.
You may create your Halloween bouquet not just out of candy but candy and silk flowers. For example, you may add black silk roses into your arrangement.