Final answer:
For seizure precautions, essential bedside items include a suction apparatus and oxygen to maintain and clear the airway during a seizure.
Step-by-step explanation:
When initiating seizure precautions for a child being admitted to the nursing unit, it is essential for the nurse to have certain items at the bedside. The most appropriate items to place at the bedside include a suction apparatus and oxygen. These items ensure that the child's airway can be maintained and cleared if necessary during a seizure.
An emergency cart might also be necessary in some settings, but it is not exclusively for bedside. A tongue depressor or a tracheotomy set would not be as immediately necessary for standard seizure precautions.