"Hi Raquel! You specified “blankets, saddle pads, bandages, hoods” – by hoods I assume you mean blinkers. We buy most of our stable supplies from http://www.bigdweb.com/ unless we need something that’s so heavy the shipping cost will be too high.
For heavy things like rakes, forks, wheelbarrows, fans: we go to Home Depot or Lowes.
For heavy things like buckets of poultice, powdered or liquid supplements, we go to the local tack shop – most racetracks have a vendor for these items on site or near the stable area. Sometimes it’s the feed company located on the racetrack property or close by.
A challenge is the stuff that race trainers need to be color specific to match the stable colors and/or logo – we need stall webbings in the stable colors which usually have to be ordered and they are very heavy. The saddle pads with logo have to be specially ordered. Usually the on-track tack shop can get these things at the best price."
I would just add that getting saddle pads with logo and signage is fairly challenging. The people around who provide these services specific to the horse and racing industry seem to be few and far between. I'd like recommendations!