Good for school iPads -- 5 Minutes to a Kid-Proof iPhone & iPad - "hidden secrets" to simply ensure your kids don't delete your apps or contacts or make purchases on your iPhone or iPad! And also a trick to limit their access once within an app!
Final step - sealing up the box. Childproofing a surge protector - cut a hole in the side of a plastic Tupperware/Rubbermade container. Put surge protector in box. Attach all cords and thread cords through hole. Seal up the box.