Can I use a verb+的 construction to imply an item/noun?
I think most of these verb+的 noun are all following a law that the verb must be a transitive verb.

吃的 喝的
means something can be eaten or drunk

However for intransitive verbs, they are not able to construct verb+的 nouns, for the reason that there are no passive structures.

洗澡的 is a really strange usage. Though it can be used as a transitive verb, the passive structures for bathe is not common to used in daily life.

Besides, verb+的 is a very informal usage that they are mostly only used in oral Chinese. For more formal ways, there are some other words that can be used, like 食物 饮品 for food and drinks.