Right next to his body on the floor there is a broken bottle of cologne. Minnie his wife maybe came up right behind him and hit Horace which made him hit the sink and drop the cologne bottle which make it break because when he hit the sink it moved and the bottle broke into pieces. Unless it broke when he placed it down before his death but he placed it wrong.
In the bathroom there was a bar of soap on the floor outside the shower. Soap tends to slip but it falls in the shower