Here are some ideas to put in it:
· first-aid manual
· sterile gauze pads of different sizes
· adhesive tape
· adhesive bandages in several sizes
· elastic bandage
· a splint
· antiseptic wipes
· soap (I bought a travel purel)
· antibiotic ointment
· antiseptic solution (like hydrogen peroxide)
· hydrocortisone cream (1%)
· acetaminophen and ibuprofen
· extra prescription medications (such as Dramamine because I cannot go on a boat or ride without it!!)
· tweezers
· sharp scissors
· safety pins
· disposable instant cold packs
· calamine lotion
· alcohol wipes or ethyl alcohol
· thermometer
· plastic non-latex gloves (at least 2 pairs)
Do It And How 
You’re absolutely correct! I’ve started a Free Online First-Aid Training Course which helps people learn about First-Aid! I think that we all should learn about first-aid because accidents happen when we least expect it! Keep up the good work!