A FRIEND OF MINE HAS BEEN WORKING ON A SANDBOX FOR HIS TWO KIDS FOR THE LAST FEW WEEKS. HE MENTIONED WANTING TO POUR CEMENT INTO THE BOTTOM TO PREVENT THE ROOTS OF A NEARBY TREE FROM SPROUTING UP THROUGH THE SAND IN THE FUTURE. I SUGGESTED HE MOLD DINOSAUR FOSSILS INTO THE CEMENT, AS THE KIDS WILL