My car one (when it's actually stocked) has

bandaids
saline
alcoswabs
gauze
tweezers
opsite/tegaderm
sling x 2
plastic bags
spew bag
bandages of various sizes
face mask
scissors
sterile needle tips (great for splinters!)
steri strips
my spare stethoscope and BP cuff
notepad
pen
neuro torch
kidney dish
ice pack (the kind you snap to activate)
panadol
one of those thin silver blankets
themometer
regular torch

my house one has:
bandaids
savlon
dettol
bandages of various sizes
sling
panadol
children's panadol
neurofen
themometer
saline
alcoswabs
needle tips (sterile)
opsite
steri strips
neuro torches

I think that's it. I have a medicine cabinet choc full of stuff in the house so my kit isn't as comprehensive as my car one.