You could do the BOO letters in Black, Orange, and Green. You could do something similar with FALL. Front Door Decorations for Halloween. Could do FALL instead in brown with orange ribbon so it could stay up for more than just Halloween
Square glass block — from Hobby Lobby/Michael’s/Lowes — filled with string lights - vinyl cut-outs for the face — wrapped in orange tulle and topped off with a black bow and black pipe cleaners, corkscrewed. Can do a snowman,etc, for Christmas.