well i love this thread to much to let it die so here are some more ideas
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like the small snowman in the shop there could be a bird in a bird nest hat, and for a house idea do like a snail shell or a like stump house.........
@ above post well i was thinking for the joker costume you could use like a mardi gras clown colors and for the skeleton tux it would look like a tux with a skeleton rib cage under the jacket and like ripped pants so it shows leg bones i guess......