Cake decorating supplies are typically hand-held tools that pastry chefs or cake designers can use to make their cakes more beautiful. When picking out cake decorating supplies, consider two things: the ingredients you will be working with and the processes you wish to use for the actual decorating. If you plan to cover the majority of your cakes in fondant, you may like fondant impression mats, which imprint perfect patterns into the fondant. Icing spatulas are a good alternative, however, if you are working with a frosting that must be spread out onto the cake.