The key is to distinguish between simple<unk>  secondary to minor illness vs. seizure from serious central nervous system infection, which may also present with fever and seizure.
Glucose in all patients
Neither labs nor neuroimaging are absolutely necessary
Normal pediatric fever workup
Consider CBC, blood culture, UA, urine culture, CSF studies
Consider CT if:
Persistently abnormal neuro exam (especially with focality)
Signs/symptoms of increased ICP
Patient has VP shunt
Consider ECG if:
Family history of long QT, Brugada, sudden death
Routine EEG not indicated
Consider only if developmental delay or for focal symptoms
Causes amenable to specific treatment
Hypoglycemia
Hyponatremia (water intoxication, dilution of formula)
Hypocalcemia
Hypomagnesemia
INH ingestion
Persistently abnormal neuro exam (especially with focality)
Signs/symptoms of increased ICP
Patient has VP shunt
Family history of long QT, Brugada, sudden death
Consider only if developmental delay or for focal symptoms
Hypoglycemia
Hyponatremia (water intoxication, dilution of formula)
Hypocalcemia
Hypomagnesemia
INH ingestion
Febrile seizure
Epileptic seizure
Status epilepticus
First-time seizure
Seizure 
Seizure with known seizure disorder
Seizure
Psychogenic nonepileptic seizure