There is what looks like plant debris stuck to one of my outside walls and if you didn't know better, you'd never suspect that something lives inside.
This close-up has been flipped horizontally to save scrolling, but looking carefully, it is an ingenious construction with an entrance at one end.
Looking up the entrance hole, you can see that there is something lurking inside:
This is a bagworm that constructs a little casing and moves around by protruding the top half of its body from the casing and using its legs to move, dragging the casing along. It spends its whole life inside the casing and ultimately pupates and turns into a moth. I don't know which kind this is and I don't want to break apart its little home to find out. I think that since it is far from any food, it must have anchored itself to the wall in order to complete its metamorphosis.
Most bagworms eat leaves although some kinds live inside houses and eat spider webs