I’m in NY and it’s pretty common here. I’m sure State Farm is available nationwide but not every agent is familiar with drone coverage. Technically it’s a “personal effects” coverage and can be a standalone policy, not a rider. They do want pictures of the drone and a copy of the receipt and serial number. They cover all the accessories too. I covered the drone, fly more kit, ND filters, anti-collision lights, landing gear extensions and even the decals I skinned it with. Anything that can be lost if it plops into the pond or gets stolen.
The only downside is they will only pay out what you paid for it. So if you got a great deal, like on eBay for $1200, when it’s really worth $1600, they’re only going to give you the $1200 you paid. But on the plus side, there’s no deductible and considering that it’s generally $60 a year for coverage and they’ll pay you if you lose it or have a flyaway, I’d say it’s a win.