Way too much. I actually have 3 grooming buckets/bags because I keep saying "Okay, I'll put JUST THE ESSENTIALS in this one and leave the rest here"... and the "essentials" bag begins to grow.
The bag I'm using right now has:
3 hoof picks (I have one guy with SUPER bad thrush, so everyone has their own hoof pick)
a slick n easy
SleekEZ shedding blade (omgosh, best thing EVER... I need to get rid of the rubber curry and slick n easy)
ointment for my mare's fly allergy (concoction of swat, hydrocortisone, and benedryl cream)
ToDAY cow mastitis treatment (for Jack's thrush)
a bottle of disinfectant (horse safe) from my farrier, that I rinse Jack's feet with and clean the hoof pick with
an extra lead rope
OH, and a hair brush (for mane and tail)
and a jar of organic coconut oil
And that's the ESSENTIALS bag. Wow. Sad.