All my tank have some kind of kiddie colorful decors. All of the decor are gifts that other people have given me. I cherish everything that they give me for my birthday and anniversaries, so I keep all of them. I wonder what I'll get for this upcoming christmas. I have alien looking plants, houses, castles, ships, ancient mummy statues, fish statue, and many other random items.
I don't mind since I'm in this hobby as a fish keeper, so I don't really care for the appearance of my tanks. Been experimenting to see which fish like which random decor.