The 'sand' dessert is just banana cream pudding (in our case, we needed 2 boxes) and crushed vanilla wafers. If I would have thought ahead of time, I would have picked up some little umbrellas, gummy fish or something else decorative.
This bucket of mud was especially tasty. It's chocolate pudding and crushed oreos. We did think to buy some gummy worms. This time, we layered the pudding with crushed oreos throughout.