So I had an idea while modding a couple of spirit games (as I wasn't able to easily change the colors of the squares occupied by a 'possessed piece'). Rather than randomly having the color of the square changed, there would be a ghostly spirit hat and broom (i.e. backwards witch hat and broom) on the piece. I thought it turned out rather well. You can see the spirit possessing the piece. Here's a template:
So I had an idea while modding a couple of spirit games (as I wasn't able to easily change the colors of the squares occupied by a 'possessed piece'). Rather than randomly having the color of the square changed, there would be a ghostly spirit hat and broom (i.e. backwards witch hat and broom) on the piece. I thought it turned out rather well. You can see the spirit possessing the piece. Here's a template: