What fun stuff can blind kids do outside?
I imagine anything that is safe, feels interesting or sounds interesting would work here. So you could let her feel different textures like sand, mud, weeds, water, wind, etc. in a sand box. Or if you want to make a game of it, you could tie a rope between several different locations in your yard to create a sort of blind scavenger hunt. Your daughter could follow the rope from object to object (trees, rocks, etc.) identifying what each things is. Or if you want to appeal to noise, you could buy used instruments, like a trumpet or drums for instance. Outside, the noise wouldn’t be as disruptive as it might be inside.