Borrow a Fireman's coat and hat for you. Cut out big black dots and some big floppy ears from felt; glue dots on your horses body, attach ears to his bridle or halter and your horse is your dalmation.
Create a unicorn horn from wrapping paper tube attach to browband and add glitter to mane and tail. Find a whimsy flowing fairy dress, add wings and glitter for you. Go barefoot and bareback for a fairy and her unicorn.
Gather your most authentic western wear include hat & bandana. Use western tack. Make cantle bags from construction or cardstock add "US MAIL". Glue a "US" brand made from cardstock on your horse and your a Pony Express rider! You might want to practice your running mount.
Sounds like fun!!!
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well perserved body, but rather to skid in sideways-Smirnoff in one hand- chocolate in the other- body thoroughly used up, totally worn out and screaming "WOO HOO, WHAT A RIDE!!!!"