People use it for just about everything... on grazes, rashes, cuts, mud rash, as mud rash barrier, as a sun block. Personally not a big fan had a few horses allegeric to it.
It sounds ridiculous but Daz washing powder Obviously make sure your horse doesn't react to it first but It seriously brings white bits up soooo clean and the coat is sooo soft afterwards!
Baby oil
Baby wipes
Hairspray
Hairgel
hairbrush
flannel
tea bags (for reducing swellings, they dont sit around all day swigging cups of tea.... often )
And not forgetting every horse persons best friend - Marigolds!!