While you can certainly share horses, pretty much everyone is probably going to want their own horse.
It's a nice investment, but it requires that you gather up 100 Hardwood (among other ingredients) to build a horse stable. Stardew Valley Multiplayer Tips - A Horse Needs a StableĪ horse gives you a pretty decent speed boost, letting you move across the map roughly 30%-ish faster. There is one upside, though: You can lend each other tools! You don't need a hoe in the mines, so leave it in a chest and let one of your friends use it! By keeping a constant rotation (and making sure that one tool is being upgraded at all times, as there is only one blacksmith), you can make good progress on getting upgraded tools quickly.