Safety
Risks of serious injury or death exists while using a Onewheel. Always ride with caution!
Helmets
Always ride with a helmet on. Skateboard helmets are a good option for low-speed impacts. Moto helmets can offer better protection, especially at higher speeds and on roads.
Helmets that prevent you from easily looking at your feet should be avoided.
The Triple 8 Gotham helmet has a unique style and is both CPSC Bike and ASTM Skate safety certified to protect from a variety of impacts.
Glasses or Visor
Dust or insects in your eyes at high speed can easily cause a fall resulting in serious injury. As such, eyes protection is recommended.
Protection pads
Wrist guards and Gloves
I like Pearl Izumi Men's Thermal Conductive Glove ($14) because they're thin, wind resistant, and work on touch screens.
More expensive, but offer great protection: Demon United Flexmeter Wrist Guard ($55) very comfortable, easy to take off/put on.
The Hillbilly half finger wrist guards/gloves are well built and will also protect your hands a bit better if/when you go down. They also make a full finger version.
Clothing
Shoes
Generally speaking, flat soled shoes are best. Nike SB is a great brand, as well as any other skate shoe.