One of the most important tools for building sandcastles is a long-handled shovel fitted with a small scoop. Although you can make use of any ordinary shovel, using a long handled shovel will put less strain on your back whereas the small scoop will make it easier to create different sized holes. Moreover, with a small sized scoop, it will be much easier to create moats and pathways next to already built sandcastles without having to worry about toppling them over.
There are a number of tools in the collection of common household items which can be used for this task. Cake-decorating knives, different shaped bucket, a pie server and mudding knife can be used to perform a number of sandcastle building tasks such as adding details and interest to the castle and removing large volumes of sand to make stairs leading to the sand castle.
It may sound surprising but there is no tool more versatile than your hands for building sand castles. With your hands, you can smooth out sand and accomplish a detail which would be impossible with any other tool.
Alternatively, you can invest in a proper sand castle building kit. These kits combine all the required tools in a bag, making it much easier to carry the tools. You can either search for such kits online or you can visit a store which is part of a large retail chain. Make sure that the kit you invest in contains all the tools which you will need such as a hoe, shovel, different sized scoops and detail shapers. Choose a kit which suits you budget and also has all the required tools.