• For liquids or near liquid forms:
Bottled shampoo and conditioner can be spurted out of there containers to the eyes of the attackers or the floor to make them slip.
Mouth wash can be contained in your mouth to be spat at your attackers' faces or just poke a hole on top of the cap to spray.
Cologne and perfumes can also be sprayed to irritate your attackers' eyes and nose.
For toothpaste, just fling the substance at your attacker, or mix it with water and spit it with your mouth.
For solids:
Bath bombs can be combined with hot water and splashed on to attackers face.
Soap bars can also be used the same way or just wet the floor and throw it on the floor to make your attackers slip.
Body scrubs can be just used the way they are by throwing them to your attackers' faces.
The bucket or pail can used to contain freezing cold water or boiling hot water and splashed on to their faces. Or maybe just use it to knock them out or obstruct their vision by putting it over their heads to give you time to pick up another weapon.
The shower head can be adjusted to hot water and sprayed on your attackers. If they come in pressure features that even better.
Water sprayers for washing your butt can also be used the same way except for the hot water option.
Toothbrushes can be used to stab any delicate part of their bodies.
The top cover of your toilet bowl can be used to smash them in their heads or bodies.
Towels can be wetted and act as a flexible nunchucks or just strangle your attackers to death with them.