Several months later, Halloween will come again in Animal Crossing New Horizons. What type of island theme do you want to use? Here is a small science lab design but seems a little horror, with two skeletons stand there, an Australopith put on the ground, the Golden Candlestick is lit in the dark,  makes the atmosphere a little weird. The Future-tech Wall is a notable Animal Crossing item in this room, it fits the theme incredibly well. You may notice there is also a Solemn Painting in the middle, a Sepia Globe on the Antique Console Table, and a Wall-mounted Candle behind it.