oh so cute....was the plant outdoors? An insect could have pollinated it, and I suppose that could happen indoors as well if some sort of bug got in the house. Either way, they look great. Good luck with them.

possibly Kalanchoe tomentosa, Euphorbia species (too small to know what, but could be lactea), cactus no clue (maybe a bit small to guess accurately), and an Echeveria (again, kinda small to ID)

Thanks for the replies. I was basically gone on the morning of Day 1 and just came back on the evening of Day 4. I ended up using the plastic bag method with only slightly damp soil. No one near could have come over to mist them :( But I am glad to report that they seem to have survived the ordeal! I didn't see any mold on the soil, but there's a tiny white spot on one cacti so I'm not sure if maybe I got them out of their improvised greenhouse just in the nick of time. Hopefully that one will recover anyway. I actually have two new babies that appeared during my absence. They're back in a sunnier spot now.

What Zone are you in uobet55? Hard to give advice w/o it. The calendar says its Fall, but its 88F/31C w/o a cloud in the sky where I am.