Here is mine and see if you can add anything
Tack
Saddle (stirrups and leathers already attached)
Saddle cover
Extra stirrup leathers
Bridle (bit and reins attached)
Extra bridle (I have had them brake at shows)
Girth
Saddle pad
Gel pad
Crop
Horse Wear
Boots (front and back)
Cooler
Scrim sheet(by the ring)
Ear net
Red ribbon (one of my horse's kicks)
Human Wear
Jacket
Show shirt
Collar(for show shirt)
Pin(for Collar)
Gloves
Breeches
Extra pear of breeches (for spills or falls)
Socks/Zocks
Tall boots
Spurs (with spur straps)
Paddock boots(for when not showing)
Half chaps (schooling)
Shirt (to go over show shirt)
Hair net
Helmet
Hair ties
Grooming
Curry
Hard brush
Medium brush
Soft brush
Comb/brush
Fly spray brush(I use another soft brush)
Hoof picks
Hoof polish(black)
Extra studs (if horse is wearing them)
Show sheen
Shampoo (to clean horse's legs if dirty before showing)
Baby oil (hides dandriff)
Baby wipes (cleans face markings and white horses)
Extra yarn (if horse is braided)
Sciccors
Bucket (for bathing)
Sweat Scraper
Scrubbing mit
Extras
First aid kit for your horse
First aid kit for yourself
Chairs
Cooler with Water
Water for your horse
Buckets (for horse to drink out of)
Watch (if you do cross country)
Well I think this is about everything I may have forgotten a few things but my trailer is normally left packed with alot of things so we don't forget them.
O I almost forgot. Always remember your number and ALWAYS have FUN!!!
