This Autonomous Snow Blower Shovels on its Own, Recharges Itself, and Keeps Going
(www.carsandhorsepower.com)
There's like a 1" gap in the grate and at least 3-4" from there to any moving parts. Yes, a toddler can stick their arms in there, but if that happens it will be predominantly due to horrible parenting.
It obviously isn't 100% hazard free, it's a motorized power tool after all, but it does seem to have proper mitigations in place to reduce risk of injury to a reasonable level.