I only give private lessons and do a once a month "open ride" for all of my students to practice working traffic, but most of my students who participate in those trailer in their own horse. Each horse I use for lessons has a saddle rack in the tack room and a locker with bridle, boots (if applicable), halter/lead, their own brushes & hoof pick. The lockers I picked up at an auction, it was a middle school that was being consolidated and closed, they are perfect height for hanging bridles, they have the shelf at the top and best of all were a steal!
Life is like a camera. Focus on what's important, Capture the good times, Develop from the negatives and if things don't work out, Take another shot.