Forget bulging muscles or a toned set of abs. If you really want to impress everyone on the beach this summer, a stunning sand castle is the way to go. And if your sculpting skills max out at Play-Doh snakes, these architectural sand castle molds will let you re-build the most stunning structures from past empires, ready to be lost to time once again once the tide rolls in.

At around $3 each you can complete the whole set for less than $20, and since they max out at just seven inches in size, they're perfect for crafting sandbox civilizations too. [Educational Toys Planet via Fancy]