Something I've done is to segregate a Trauma kit from a Booboo and Medical Kit. The two kits are different colors and are labeled appropriately. Booboo/Medical carries bandaids, OTC meds in the appropriate doses for adults and kids, tools like magnifying glass, tweezers, etc.

OTC meds include:
tylenol,
ibuprofen,
rehydration packets,
antihistamines,
antidiarrheal,
an OTC epinephrine inhaler,
UTI meds,
eye drops,
cough drops,
and likely others.