A few people have an interesting use for a horse trailer, including converting it into a mobile bar. The idea was so original that the owner had the idea of renting it out. If someone wants a unique gimmick for a party, consider telling that person about a horse trailer bar for rent. It is a great way to liven up a party or else throw one in a remote area.
A horse trailer also happens to make a nice vending vehicle. It is mobile, is quite secure while moving, has a fair amount of room inside for a cooler and condiments, and might be fitted to expand into a sheltered concession stand. It is actually a neat place to vend all sorts of concessions. The decorations can be rustic and charming. The only disadvantage is that there is not enough room for a stove.