Packing for a horse show requires careful planning to ensure you have all the necessary equipment and supplies for both you and your horse. Here's an extensive packing list to cover all your bases:

For the Horse:

1. Tack:

   • Tack Trunk
   • Saddle(s) 
   • Saddle Pads
   • Bridle(s) with bits
   • Martingale, if needed
   • Girth
   • Stirrup leathers and irons
   • Breastplate or breastcollar
   • Halter and lead rope
   • Lunging equipment, if applicable
   • Extra tack (in case of breakage)
   • wraps or bandages

   •  Boots

2. Grooming Supplies:

   • Brushes (body brush, dandy brush, curry comb, mane and tail brush)
   • Hoof pick
   • Hoof conditioner or oil
   • Mane and tail detangler
   • Towels
   • Sponges
   • Sweat scraper
   • Clippers, if needed
   • Fly spray
   • Hoof boots or wraps, if necessary
   • Braiding Supplies
   • Seam Ripper
   • Cooler or fleece for after workouts or bathing
   • Fly mask and fly sheet

3. First Aid Kit for the Horse:

   • Antiseptic spray or solution
   • Wound ointment
   • Gauze pads and rolls
   • Adhesive bandages
   • Thermometer
   • Scissors
   • Vet wrap
   • Emergency contact information for vet

4. Feed and Water:

   • Hay nets or bags
   • Grain/supplements
   • Water buckets or containers

5. Stable Supplies:

   • Stall guards or ties
   • Stall bedding (if not supplied)
   • Pitchfork and wheelbarrow (if cleaning stalls)
   • Cross ties 

6. Miscellaneous:

   • Competition number and holder
   • Blankets or sheets for transport
   • Trailer tie
   • Portable stall fans (if it's hot)
   • Hay/feed bags for travel
   • Travel boots or wraps
   • Duct tape
   • Zip ties

For the Rider:

1. Apparel:

   • Riding boots (field boots or paddock boots with half chaps)
   • Riding breeches
   • Show coat
   • Show shirt
   • Gloves
   • Belt
   • Boot Socks
   • Schooling Outfit
   • Hair Net, Hair Ties, Pins, Hair Spray
   • Spurs/Crop
   • Sunglasses

2. Safety Gear:

   • Helmet
   • Body protector (if needed)
   • Medical armband or bracelet (if needed)

3. Personal Care Items:

   • Sunscreen
   • Lip balm
   • Makeup
   • Hand sanitizer
   • Towels
   • Extra clothes (in case of weather changes)
   • Rain gear

4. Miscellaneous:

   • Water bottle or hydration pack
   • Boot polish and polishing supplies
   • Snacks
   • Folding chairs or seating
   • Competition schedule or program
   • Pen and notebook
   • Cash or card for any unforeseen expenses
   • Camera or smartphone for capturing memories
5. Documentation:

• Horse's registration papers
• Negative test results (if required)
• Health certificates (if traveling across state lines or internationally)
• Membership cards (for any relevant associations or organizations)

Transportation:

• Shipping or Breakaway Halter
• Head Bumper
• Shipping Boots
• Trailer ties or trailer safety equipment

Emergency Kit:

• Flashlight
• Multi-tool or Swiss Army knife

Entertainment:

• Books, magazines, or electronic devices for downtime

Comfort Items:

• Portable chairs or seating
• Umbrella or sunshade

Make sure to tailor this list according to your specific needs, preferences, and the duration of your horse show. Additionally, it's always a good idea to double-check your packing list before leaving to ensure you haven't forgotten anything essential. Happy horse showing!