!Good stuff to know!
PVC plumbing pipes -, buy these at home improvement centers and use them as jump poles.
Gallon size plastic Milk jugs - can be filled with water or sand for stability. Make great dressage ring markers.
Old car mats - great for putting under hoof at show for applying hoofshine - keeps hoof clean and dry. Also good for kneelling on, etc.
Clear plastic zipper bags - use for organizing things so you can see them, but won't lose them - like braiding materials (precut yarn, clips, threads, needles, pullthru, etc.) and any small items. Label bags, and do a pre-show check to make sure all items are there, and ready to go.
Rubber (or plastic) tote boxes - use for everything from First Aid kit to the tack accessories for shows. No more hunting for things. Choose size and colors to fit your needs.
Pillowcases - use to keep rags, one for clean other for dirty, and toss the whole bag into wash (commercial machine - with soap and bleach)